Data Science Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Data Science Interview Questions

Questions Answers Views Company eMail

How do you treat multicollinearity and heteroscedasticity in regression?

113

What is logistic and linear regression? How do you treat multicollinearity and heteroscedasticity in regression?

What is an api?

What is nosql? Name some examples of nosql databases.

124

How do you build a custom function in python or r?

118

What is missing value imputation?

124

Define a sql query? What is the difference between select and update query? How do you use sql in sas, python, r languages?

101

How do you check for data quality?

109

What is advantage of using apply family of functions in r? How do you use lambda in python?

107

What is column storage? What is a document database?

128

What is association analysis? Where is it used?

101

How do you use goal seek in excel?

109

What is chi square test?

108

What is churn?

115

Where is association analysis used?

117

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Un-Answered Questions { Data Science }

What is a z test, chi square test, f test and t test?

118

What are you employed pip?

113

Explain data cleansing?

What are eigenvalue and eigenvector?

122

Explain types of clustering algorithm?

What is pylab?

Explain while working on a data set, how do you select important variables?

111

What is a linear regression in data science?

119

What is cluster sampling in data science?

111

What do you understand by the term data science?

106

what is prior probability and likelihood?

What is chi square test?

108

Does the data scientist need to know programming?

122

Can you explain data cleansing?

Which one you prefer R or Python for text analytics?

139

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