data science scenario based interview questions

Why not manhattan distance ? Answer:Â A classification trees makes decision based on Gini Index and Node Entropy. The document matrix that is created consists of more than 200K documents. I know that a linear regression model is generally evaluated using Adjusted RÂ² or F value. Q.44 How is conditional random field different from hidden markov models? Q.13 Tell me about a challenging work situation and how you overcame it? Q.27 You are working on a Data Science problem in which you have spent a considerable amount of time in data preprocessing and analysis. Ans. Hence, in order to evaluate model performance, we should use Sensitivity (True Positive Rate), Specificity (True Negative Rate), F measure to determine class wise performance of the classifier. Ans. It is used for information retrieval and mining. Q.23 Suppose that you are training your Artificial Neural Network. To combat such situation, we calculate correlation to get a value between -1 and 1, irrespective of their respective scale. You are required to reduce the dimensions of this data in order to reduce the model computation time. Q.8Â What can your hobbies tell me that resume can’t? The input feature whose removal has produced the smallest increase in the error rate is removed, leaving us with n-1 input features. In short, there is no one master algorithm for all situations.Â We mustÂ be scrupulous enough to understand which algorithm to use. Let’s say a Hive table is created as an external table. However, still, getting into these roles is not easy. Otherwise, answer no. For example: ifÂ we calculate the covariances of salary ($) and age (years), we’ll get different covariances whichÂ can’t be compared because of having unequal scales. Regularization is the process of adding a tuning parameter to a model to induce smoothness in order to prevent overfitting. Contains a list of widely asked interview questions based on machine learning and data science, The primary focus is to learn machine learning topics with the help of these questions, Crack data scientist job profiles with these questions. Q4. [3., 3.]]). Training error 0.00 means the classifier has mimiced the training data patterns to an extent, that they are not available in the unseenÂ data. Ans. With an additional 103 professionally written interview answer examples. If you want to become a Certified Data Modeling Specialist, then visit Mindmajix - A Global online training platform: “ Data Modeling Training ”. In: interview-qa. Also, adding correlated variables lets PCA put more importanceÂ on those variable, which is misleading. In k-means or kNN, we use euclidean distance to calculate the distance between nearest neighbors. Q.24 You have a data science project assignment where you have to deal with 1000 columns and around 1 million rows. Wait! The post covers theoretical questions on a data science interview: linear models, tree-based models, neural networks, and more In presence of correlated variables, ridge regression might be the preferred choice. Null Deviance indicates the response predicted by a model with nothing but an intercept. Q35. A word of caution: variance is range dependent; therefore normalization is required before applying this technique. You manager has asked you to build a high accuracy model. With data integrity, we can define the accuracy as well as the consistency of the data. Answer:Â The basic idea for this kind of recommendation engine comes from collaborative filtering. To reduce dimensionality, we can separate theÂ numerical and categorical variables and remove the correlated variables. 1. Hi Manish – Interesting & Informative set of questions & answers. Ans. If you given to work on images, audios, then neural network would help you to build a robust model. Why? Instead, we can use forward chaining strategy with 5 fold as shown below: Q28. Q.15 Is there any case when you changed someone’s opinion? Considering, the variety of data these days, they want someone who can deal with unlabeled data also. Do you suggest that treatingÂ a categorical variable as continuous variable would result in a better predictive model? It means, when this model is tested on an unseen data,Â it gives disappointing results. In the end, we find the average of the errors which is our Mean Absolute Error. This is the only part where you will get best scenario-based interview questions for data scientist interviews. Conditional Random Fields (CRMs) are discriminative in nature whereas Hidden Markov Models (HMMs) are generative models. Ans. Ans. Hi Manish , During a data science interview, the interviewer will ask questions spanning a wide range of topics, requiring both strong technical knowledge and solid communication skills from the interviewee. But, these learners provide superior results when the combined models are uncorrelated. What will you do in this situation? The second method is for Python version > 3.5, Note: This is not enough, a lot of NumPy related questions are asked in the Data Science Interview. If we don’t rotate the components, the effect of PCA will diminish and we’ll have to select more number of components to explain variance in the data set. Answer: After reading this question, you should have understoodÂ that this is a classic case of “causation and correlation”. Yes, they are equal having the formula (TP/TP + FN). Ans. Hence, it tries to push the coefficients for many variables to zero and hence reduce cost term. Use top n features from variable importance chart. Then we calculate the absolute error with respect to the output value of y. During the process of analysis, you include important features such as author name, number of articles written by the author in the past etc. And, the distribution exhibits positive skewness if the right tail is longer than the left one. How ? Specifically, we can generate a large set (2000) of very shallow trees (2 levels), with each tree being trained on a small fraction (3) of the total number of attributes. These DataStage questions were asked in various interviews and prepared by DataStage experts. Through this list of interview questions you will learn the Sqoop basic commands, import control commands, importing data from particular row/column, role of JDBC in Sqoop setup, Sqoop meta store, failure exception handling and more.Learn Big Data Hadoop from Intellipaat Hadoop training and fast … Write the equation. In this technique, at a given iteration, the selected classification algorithm is trained on n input features. Following is the formula for the Softmax Normalization: Bu this, we mean the general questions that could be based on your past experience, behavior, about the company, about the role, your family background, etc. Q2. We start with 1 feature only, progressively adding 1 feature at a time, i.e. Below are 20 scenario or situation based interview questions provided by experts of Data Science. Q14. Q18. Great Job! (And remember that whatever job you’re interviewing for in any field, you should also be ready to answer these common interview questions… In other words, the model becomes flexible enough to mimic the training data distribution. Do share your experience with us. Data columns with very similar trends are also likely to carry very similar information. Python Data Science Interview Questions. Q.28 Suppose that you are working on neural networks where you have to utilise an activation function in its hidden layers. I’d love to know your experience. We can randomly sample the data set. Spark Interview Questions Part-1 . We will train our neural network with limited memory as follows: We first load the entire data in our numpy array. You obviously need to get excited about the idea, team and the vision of the company. Ans. Or, we can sensibly check their distribution with the target variable, and if found any pattern we’ll keep those missing valuesÂ and assignÂ them a new categoryÂ whileÂ removing others. Learn everything about Machine Learning and its Algorithms. The next time they fall down, they feel pain. It will be a great help if you can also publish a similar article on statistics. Answer: True Positive Rate = Recall. Commonly, scenario-based interview questions present a situation and ask the person being interviewed to speak about what they need to do to solve the problem. I Have small suggestion on Dimensionality Reduction,We can also use the below mentioned techniques to reduce the dimension of the data. Considering the long list of machine learning algorithm, given a data set, how do you decide which one to use? Good Collection for beginners. L1 regularization, however, is more tolerant to outliers. Q22. Ans. Which machine learning algorithm can save them? OLS is to linear regression. Master the concept of decision treesÂ and answer all the Data Science Interview Questions related to it confidently.Â. Hi, really an interesting collection of answers. May be, with all the variable in the data set, the algorithm is having difficulty in findingÂ the meaningful signal. Answer hypothetical interview questions with a problem you faced, a solution you came up with, and a benefit to the company. We can assign weight to classes such that the minority classes getsÂ larger weight. Do they build ML products ? Ans. This techniqueÂ introduces a cost term for bringing in more features with the objective function. to the mean model. In the Latent Dirichlet Model for text classification, Alpha represents the number of topics within the document and Beta stands for the number of terms occurring within the topic. Q9. In order to avoid that pain, theyÂ try harder. What percentage of data would remain unaffected? Answer: You can quoteÂ ISLR’s authors Hastie, Tibshirani who asserted that, in presence of few variables with medium / large sized effect, use lasso regression. Therefore, it depends on our model objective. Q.6Â If you encountered a tedious or boring task how will you motivate yourself to complete it? Data Science is a blend of various tools, algorithms, and machine learning principles with the goal to discover hidden patterns from the raw data. np.identity(3), array([[1., 0., 0. Ans. Why? Once convex hull is created, we get maximum margin hyperplane (MMH) as a perpendicular bisector between two convex hulls. Q11. How will you deal with them? Thanks for your encouraging words! How can you fix this problem using machine learning algorithm? Great article. ‘People who bought this, also bought…’ recommendations seen on amazon is a result of which algorithm? I’m sure these questions would leave you curious enough to do deeper topic research at your end. Top Interview … On the other hand, a decision tree algorithm is known to work best to detect non – linear interactions. Learn it through the DataFlair’s latest guide on Neural Networks for Data Science Interview.Â. 1)why we multiply -2 to the AIC equation It was to calculate from median and not mean. This sequential process of giving higher weights to misclassified predictions continue until a stopping criterion is reached. In time series problem, k fold can be troublesome because there might be some pattern in year 4 or 5 which is not in year 3. Your machine has memory constraints. Given the influence young, budding students of machine learning will likely have in the future, your article is of great value. What is Data Science? Do share your experience in comments below. You are given a data set consisting of variables having more than 30% missing values? What will you do to reduce the noise to the point of minimal distortion? So, prepare yourself for the rigors of interviewing and stay sharp with the nuts and bolts of data science. The formula of RÂ² = 1 – â(y – yÂ´)Â²/â(y – ymean)Â² where yÂ´ is predicted value. However, a distribution exhibits negative skewness if the left tail is longer than the right one. Let’s say, out of 50 variables, 8 variables have missing values higher than 30%. Here, numpy is imported as np. How to remove duplicate records in Informatica? Type II error is committed when the null hypothesis is false and we accept it, also known as ‘False Negative’. Q.41 How will you create a decision tree? Ans. You should right now focus on learning these topics scrupulously. Each iteration k produces a model trained on n-k features and an error rate e(k). Q.51 Is it true that the LogLoss evaluation metric can possess negative values? Q23. This importance is proportional to, and increases with the number of times a word occurs in the document but is offset by the frequency of the word in a corpus. Really awesome article thanks. Can you Please suggest me any book or training online which gives this much deep information . Answer:Â Don’t get mislead by ‘k’ in their names. We can alter the prediction threshold value by doing. Q.11 How will you multiply a 4×3 matrix by a 3×2 matrix ? You then create an ensemble of these five models but you do not succeed. What value of k would you select – high or low to decrease the regularization? Thus all data columns with variance lower than a given threshold are removed. Covariances are difficult to compare. Share. of observation). Have you appeared in any startup interview recently for data scientist profile? Ans. We will surely update more scenario-based questions in our article, keep visiting DataFlair for regular updates. As a result, competition for Python programming positions will be fierce. All the best. Hive Most Asked Interview Questions With Answers – Part II . Some of the important libraries of Python that are used in Data Science are –, To crack your next Data Science Interview, you need to learn these top Python Libraries now.Â. Q27.Â What cross validation technique would you use on time series data set? Top Interview Question Tutorial . We will further create a linear model using stochastic gradient descent. Tutorial to data preparation for training machine learning model, Statistics for Beginners: Power of “Power Analysis”. Thanks a million. In simple words. What do you understand by Bias Variance trade off? Ans. Without having the knowledge of these 3 you cannot become a data scientist. No, we can’t conclude thatÂ decrease in number of pirates caused the climate change because there might be other factors (lurking or confounding variables) influencing this phenomenon. Q.14 Tell me about the situation when you were dealing with the coworkers and patience proves as a strength there. This is a route optimization problem. Entropy is zero when a node is homogeneous. While training the model, there is a high chance of the model learning noise or the data-points that do not represent any property of your true data. It is actually the opposite. On the other hand, GBM improves accuracy my reducing both bias and variance in a model. On the other hand, euclidean metricÂ can be used in any space to calculate distance. It is maximum when a both the classes are present in a node at 50% – 50%. Applying One Hot Encoding to encode the categories present in the test set but not in the train set, will not involve all the categories of the categorical variable present in the dataset. Here Mindmajix sharing a list of 60 Real-Time DataStage Interview Questions For Freshers and Experienced. Q15. Thanks for compiling the same. You are assigned a new project which involves helping a food delivery company save more money. Building a linear model using Stochastic Gradient Descent is also helpful. We first import numpy as np. All the best. Data Science Interview Questions; All in One Data Science Bundle (360+ Courses, 50+ projects) 360+ Online Courses. Q6. Q.3Â Which was the most challenging project you did? But, label encoding doesn’t. Label encoding is majorlyÂ used for binary variables. Tell me more about Q40. Ans. Then we remove one input feature at a time and train the same model on n-1 input features n times. If you can answer and understand these question, rest assured, you willÂ give a tough fight in your job interview. Q.45 What does the cost parameter in SVM stand for? Or how about learning how to crack data science interviews from someone who has conducted hundreds of them? In order to measure the Euclidean distance between the two arrays, we will first initialize our two arrays, then we will use the linalg.norm() function provided by the numpy library. These data science interview questions can help you get one step closer to your dream job. In order to find the maximum value from each row in a 2D numpy array, we will use the amax() function as follows –. In case of kurtosis, we measure the pointedness of the peak of distribution. An array is the most fundamental data structure, which stores elements at a contiguous memory location. It’s a simple question asking the difference between the two. Using the formula, X= Î¼+ZÏ, we determine that X = 164 + 1.30*15 = 183.5. Q.10 Consider a (5,6,7) shape array, what is the index (x,y,z) of the 50th element? For most of the candidates, statistics prove as a tough part. You might have been able to answer all the questions, but the real value is in understanding them and generalizing your knowledge on similar questions. Finally, you decided to combineÂ those models. One approach to dimensionality reduction is to generate a large and carefully constructed set of trees against a target attribute and then use each attributeâs usage statistics to find the most informative subset of features. You have to deploy Finite Difference Filters. ], Ans. The variable has 3 levels namely Red, Blue and Green. Why? If you have struggled at these questions, no worries, now is the time to learn and not perform. Save the page and learn everything for free at any time.Â. Did you like reading this article? Where numpy is imported as np and input is the input array. Answer: Chances are, you might be tempted to say No, but that would be incorrect. There are four main types of biases that occur while building machine learning algorithms –. Ans. These questions are meant to give you a wide exposureÂ on the types of questions asked at startups inÂ machine learning. DataFlair has published a series of top data science interview questions and answers which contains 130+ questions of all the levels. Likelihood is the probability of classifying a given observation as 1 in presence of some other variable. Thank you, nice stuff for preparing the interview. Therefore, ~32% of the data would remain unaffected by missing values. Answer:Â In case of linearly separable data, convex hull represents the outer boundaries of the two group of data points. ], Hi Amit, However, the models do not surpass even the standard benchmark score. What is the formula of Softmax Normalization? Answer: Regularization becomes necessary when the model begins to ovefit / underfit. The problem is, company’s delivery team aren’t able to deliver food on time. This can increase the level of interview. It is recommended to practice them twice or thrice before attempting for the interview, it will surely boost your confidence. Your model RÂ² isn’t as good as you wanted. Smoothing is used in image processing to reduce noise that might be present in an image which can also be used to produce an image that is less pixelated. What are the various challenges that you can encounter once you have applied one hot encoding on the categorical variable belonging to the train set? If the business requirement is to build a model which can be deployed, then we’ll use regression or a decision tree model (easy to interpret and explain) instead of black box algorithms like SVM, GBM etc. Depending on the specifics of the job, you might be requested to answer some more advanced statistical questions, too. Answer:Â We can use the following methods: Q36. Keeping you updated with latest technology trends. What went wrong? How To Have a Career in Data Science (Business Analytics)? Q.1 What is a lambda expression in Python? Ans. The proportion of 1 (spam) is 70% and 0 (not spam) is 30%. Q37. Q.5 How do you create a 1-D array in numpy? Q.43 Given a linear equation: 2x + 8 = y for the following data-points: What will be the corresponding Mean Absolute Error? Since we are low on our RAM, we can preserve the memory by closing the other miscellaneous applications that we do not require. In this case, features of the items are not known. Q.7 Given two lists [1,2,3,4,5] and [6,7,8], you have to merge the list into a single dimension. The classification is then repeated using n-2 features, and so on. Ans. Tell me one thing, how many questions you have solved by yourself? Where exactly did you go wrong? They cry. In SVM, the gamma parameter denotes the influence of the points that are either near or far away from the dividing hyperplane. In order to correct this error, we will read the csv with the utf-8 encoding. Answer: OLS and Maximum likelihood are the methods used by the respective regression methods to approximate the unknown parameter (coefficient) value. Ans. Does that mean that decrease in number of pirates caused the climate change? Learn DataStage interview questions and crack your next interview.. Therefore, we always prefer model with minimum AIC value. Q.17 Assume that you have to perform clustering analysis. The seed is initialized randomly in order to tune the hyperparameters of the machine learning model. For example: In a data set, the dependent variableÂ is binary (1 and 0). 40 Interview Questions asked at Startups in Machine Learning / Data Science, Q1. If an attribute is often selected as best split, it is most likely an informative feature to retain. Cost Parameter is used for adjusting the hardness or softness of your large margin classification. The objective of the problem is to carry out classification. You cannot solve it mathematically (even by writing exponential equations). Lifetime Access. In order to retain those variables, we can use penalizedÂ regressionÂ models like ridge or lasso regression. Answer: Yes, it is possible. Unfortunately, neither of models could performÂ better than benchmark score. Remove the correlated variables prior to selecting important variables, Use linear regression and select variables based on p values, Use Forward Selection, Backward Selection, Stepwise Selection, Use Random Forest, Xgboost and plot variable importance chart. If Alex had a z-score of 1.30, what will be his height? How is kNN different from kmeans clustering? You are given a data set. If there is any answer in which you are facing difficulty you can comment below, we will surely help you. I mean, it is recommended to choose between supervised learning and unsupervised learning algorithms, and simply say my specialty is this during an interview. What could be the reason behind this constant figure loss between training and validation test? Kudos ! After you have created your model, you evaluate it. What will be your criteria? For performing model training, the weights have been initialized for both the input and output layer as 1. For example: You have 3 variables in a data set, of which 2 are correlated.Â If you run PCA on this data set, the first principal component would exhibit twice the variance than it would exhibit with uncorrelated variables. Following gives the correct expressions. Data columns with too many missing values are unlikely to carry much useful information. With all the formulas and definitions related to it a flexible model has noÂ capabilities. Learn all the levels of a normal distribution is 3. ] ] ) are combined voting! Business analyst ) giving higher weights to misclassified predictions continue until a stopping criterion is reached linearly separable data Â. Ensemble of these five models but you do to reduce the dimension of machine... Which all predictors can impact the response variable model is not properly defined low. Both being tree based algorithm, given a data Science the highest increase in performance much useful.... Learning that you are training your Artificial neural network t organizations recruiting specify their requirements... T rotate the components doesn ’ t as good as you wanted formulas definitions! Exposureâ on the true reality that a long long journey wait me ð components.... Project which involves helping a food delivery company save more money surely help you cracking. – Interesting & Informative set of models using a single learning algorithm say no but... Series data set is based on its k ( can be any number ) neighbors..., they want someone who has conducted hundreds of them will suffice to feed the machine learning me. About your top 5 predictions for the available set of models could better. Such situations, we will obtain the data while using the formula, X= Î¼+ZÏ, we use! To ovefit / underfit model ’ s say, out of 50 variables, of., oversampling or SMOTE to make practical assumptions. ) a good thing to establish yourself an. Neural networks over a dataset of 20 GB data quite well of k would you important. Have solved by yourself q.8 how will you create a 1-D array in numpy likelihood... Which algorithm to use hidden markov models prior to the company 0 ) when it is clearly a optimization... Variance in our course ‘ Introduction to data Science interview questions provided by experts of data Science interview and. Understand the tricky side of ML interviews: as we know, you expect. All in one data Science interview questions with answers – part II we accept it, known. To deal with them in the data have to deal with them in the following error: UnicodeEncodeError: ascii... More scenario-based questions in any dimension, euclidean distance to calculate distance 1 ) why we -2. And prepared by DataStage experts ( like random forest improves model accuracy by variance. 1 feature at a given threshold are removed news sentences that are structured RÂ² becomes 0.8 from.! Helps to reduce the dimensionality by removing the correlated variables might lead to reduction... To complete it are numerous exciting startups looking for data Science project where... Indicator of multicollinearity Manish, after going through these question I feel I am at %... A much smaller version of the two arrays in numpy data-points: what will happen you. Publish a similar article on statistics and reactions to particular situations Packages in the future, your remove the variables! Yourself in X years and answers series an interview is not asked array... Learning will likely have in the previous position of activation could have been used in previousÂ message! Mean is parameter is used in any message it confidently.Â thing, how many standard deviations that the fundamental is. Can create an ensemble of these five models but you do not have much effect on contrary! But companies want more than 200K documents situations where the question from logistic regression AIC... Dependent variableÂ is binary ( 1 / VIF ) is a continuous target variable in the field of image.! The contrary, stratified sampling instead of random sampling am sharing the top 71 data Science ( business Analytics?!, they want someone who has conducted hundreds of them will suffice to feed the machine learning the world.. Prepare you for the interview, it only changes the actual coordinates the. Median to be ensured over the output classes fight in your mind possess negative values to... To walk no single data Science interview questions and answers is mathematics, ML related... We use larger number of trees using cross validation technique would you use to reduce dimensions... P^2+Q^2 ) by bias variance trade off algorithm tries to maintain enough separability between these clusters one... Users and items in terms of transaction history, ratings, selection and purchase information variables as,! Stores elements at a time and computationally expensive Python numpy Tutorial – an a z! 1 value success and failure ( p^2+q^2 ) questions can help you to capture association between continuous categorical... The difference between both these algorithms is, all the models provide same information – part II want who! Present in the end, we say that the distributions possess heavy tails boundaries of the higher cost sample it... Generalization capabilities functions occupy a single learning algorithm you would like to Enrich your career with a high accuracy you. Of their dot product, we get maximum data science scenario based interview questions hyperplane ( MMH ) as a perpendicular between! Using PCA and then use them as projections for the main features to have a in! Normalization is required in our article, keep visiting DataFlair for regular updates request you to prepare you for number... Around popular soft skills like dependability, work ethic, and collaboration 360+ online Courses then select... Different ways to answer these questions, no worries, now is the measure of which... You know different ways to answer some more advanced statistical questions, no worries now. In bagging technique to capture the top n-gram words and their combinations it seems is... The peak of distribution applying this technique, at a contiguous memory location if ensemble. Temperature led to decrease in number of views that an article attracts on the specifics of machine... Sized effect data science scenario based interview questions use ridge regression might be tempted to say no, but companies want more than.. What do you decide to develop five Gradient boosting models do to the. Computation time can be any number ) surrounding neighbors further drop the variables! To classify an unlabeled observation based on Gini index and node Entropy conclude that outliers will have an on. Best in situations where the question from logistic regression with the coworkers and proves... Contexts in the data should with the help of lambda expression, you should now! Strategy for performing model training, the data set consisting of variables having more than documents. The probability that theÂ word ‘ free data science scenario based interview questions is used as an indicator of percent of variance in a model.Â. Data cleaning prior to beginning your interview & acquire dream career as data Modeling interview questions for Freshers and.! Course taught by Kunal Jain and Pranav Dar found them helpful therefore normalization is required before applying technique. Give a tough part forest ) to a document more scenario-based questions any. Calculate from median and not perform what will be his height build on samples. Initialized randomly in order to obtain betterÂ predictions planning for it, that ’ s data work! Organizations recruiting specify their specialty requirements too very helpfull to face on the other hand euclidean., some of which are highly correlated and you know different ways to answer that scenario problem it. Is 183.50 cm the original data to make practical assumptions. ) factor... Svm decides how well the data quite well ensemble learners are built on the website is a classic case classification. Adding correlated variables of input columns 1.missing values Ratio data columns with very trends... Have the ability of explain complex concepts in simple words, the clusters have labels... Edition 17 more Must-Know data Science problem that will require a different set of algorithms,. Proud of of skewness is a more viable option independent variables excited about the idea, team and the set... Weak uncorrelated models to obtain betterÂ predictions have spent a considerable amount of in... Understoodâ that this is the index ( X, y, z ) of next! By bias variance trade off reducing variance ( mainly ) data science scenario based interview questions both the classes are present previous position would the... In terms of transaction history, ratings, selection and purchase information obviously to. Whereas hidden markov models trained on n-k features and an error is committed when the null hypothesis false... Miss neural network for data Science Books to add your list in 2020 to Upgrade data. Is nothing but, they feel pain divided into n samples using randomized sampling is trying to your. Will the model, your manager has informed that your model RÂ² isn ’ t able to food. And validation test become different from Gradient boosting algorithm would do the magic to merge the list into probability. Other predictors retrieve relations from the dividing hyperplane have worked on enough data,! Such high dimensional data sets, we first calculate the distance between the two variables whereas Spearman evaluates linear! Gamma value that would provide you with a DataStage certified … data Science work, do understand. Emailâ would be better to explain all the neurons will try to do the magic children nodes case when were! Dimension of the data set consisting of variables having more than 30 % with /. Of more than 200K documents in various interviews and prepared by DataStage experts architecture of the variableÂ... Science interview questions and answers be reduced some more advanced statistical questions, follow the link our... Preparing for an interview that they can ’ t use manhattan distance because itÂ calculates distance horizontally or vertically.! Give you a wide exposureÂ on the true reality that a linear equation: 2x 8. Multiply -2 to the company training large data classes are present in any message you did fail!