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

Data Science Interview Questions

Questions Answers Views Company eMail

Can you define a/b testing?

278

What cross validation technique would you use on time series data set? Is it k-fold or loocv?

281

Can you explain interpolation and extrapolation?

286

Can you explain difference between data modeling and database design?

317

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

317

Explain how can you assess a good logistic model?

271

Define cluster sampling?

288

Explain data munging?

332

Explain root cause analysis?

307

How is true positive rate and recall related?

253

Explain the differences between bivariate and multivariate analysis?

292

Explain interpolation and extrapolation?

267

Explain data wrangling?

310

Define a/b testing?

330

Explain unsupervised learning?

267

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Un-Answered Questions { Data Science }

What is an rdbms? Name some examples for rdbms? What is crud?

266

How do data management procedures like missing data handling make selection bias worse?

448

Explain the two main components of the hadoop framework?

308

What is data science with example?

275

What are the factors used to produce "People You May Know" data product on LinkedIn?

272

What does _init_.py do?

369

What is the science of data in simple words?

301

How do you use goal seek in excel?

364

What are the time series algorithms?

361

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

377

What are the variants of back propagation?

310

You have 2 dices. What is the probability of getting at least one 4? Also find out the probability of getting at least one 4 if you have n dices.

459

What is an outlier?

259

Why do you need a for loop? How do you do for loops in python and r?

310

Explain data preparation?

269

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