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

Data Science Interview Questions

Questions Answers Views Company eMail

What are the major skills data scientist need?

308

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

424

Can you explain cross-validation?

295

Can you explain data cleansing?

330

What is the difference between an analyst and a data scientist?

340

What do you understand by type I vs type ii error?

349

Can you explain supervised learning?

316

How do you understand by bias variance trade off?

335

Can you explain data munging or data wrangling?

324

What is difference between sas, r and python programming?

382

Can you define feature vector?

315

What is data scientist?

358

What is the advantage of performing dimensionality reduction before fitting an svm?

307

How is true positive rate and recall related? Write the equation.

323

Can you define data discretization?

272

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Un-Answered Questions { Data Science }

What is the difference between data science, machine learning and artificial intelligence?

332

What is nosql? Name some examples of nosql databases.

372

What is the difference between an analyst and a data scientist?

340

How can you deal with different types of seasonality in time series modelling?

356

What is cross-validation?

298

Explain systematic sampling?

329

What are independent graphics subsystems?

421

What is an example of a data set with a non-gaussian distribution?

331

What are the principal components?

348

What is data science with example?

360

Which companies participating in Insight would you be interested in working for?

341

How do you treat missing values during analysis?

330

Explain the differences between univariate, bivariate and multivariate analysis?

306

What is a C ++ iterator?

311

What is meant by linear regression?

309

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