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Recent questions and answers in Data Science Interview Questions

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Data manipulation problem study resources
A colleague of mine is studying for tech roles, and they're asked to solve a consistent type of problem during the phone screenings: practicing manipulating data (sets, h...
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Do you have a cheatsheet for Data Science?!
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What is summary statistics?
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What is the purpose of randomization in statistics?
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What is the difference between univariate and multivariate analysis?
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How will you create a classification to identify key customer trends in unstructured data?
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Mention some common problems that data analysts encounter during analysis.
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Explain the typical data analysis process.
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What is the difference between Data Mining and Data Analysis?
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What is TF-IDF algorithm?
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What are Natural Language Processing (NLP) and its applications?
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992 views
Which scenarios among the following are a valid reason to use regularization?
A. To drop the least useful variables of a modelB. To reduce over-fittingC. To reduce the bias of a modelD. To decrease p-value
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694 views
How to transform categorical variable into a matrix binary feature?
Which of the following feature transformations would be a good choice to transform a categorical variable into a matrix binary feature?A. One-hot-encodingB. Principal Com...
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When should we use Mean, Median or Mode as Measures of Central Tendency?
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520 views
What are the main steps in making a decision tree?
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Please explain Linear Regression with an example?
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