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

Data Science Interview Questions

Questions Answers Views Company eMail

Define convex hull?

Write the formula to calculate r-square?

117

Explain k-mean?

Explain recommender system?

Explain the two main components of the hadoop framework?

Define analytics?

Explain the difference between data modeling and database design?

Define data reduction?

Explain data munging or data wrangling?

Define linear regression?

106

Define feature vector?

153

Explain the difference between sas, r and python programming?

118

Explain data cleansing?

Explain the differences between univariate, bivariate and multivariate analysis?

Explain the difference between bayesian estimate and maximum likelihood estimation (mle)?

115

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Un-Answered Questions { Data Science }

What is term Pearson’s Correlation Coefficient?

129

How often should an algorithm be updated?

What are the drawbacks of the linear model?

109

Explain systematic sampling?

101

What is data scientist?

139

What are the types of business decisions?

101

What is selection bias?

How can you assess a good logistic model?

178

In k-means or knn, we use euclidean distance to calculate the distance between nearest neighbors. Why not manhattan distance?

164

What is meant by linear regression?

Can you write the formula to calculate r-square?

103

What is supervised learning?

Differentiate between type I and type ii error?

104

How will you define the number of clusters in a clustering algorithm?

126

What is the probability of pulling a different shape or a different colour card from a deck of 52 cards?

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