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?

323

Write the formula to calculate r-square?

354

Explain k-mean?

317

Explain recommender system?

331

Explain the two main components of the hadoop framework?

345

Define analytics?

328

Explain the difference between data modeling and database design?

328

Define data reduction?

289

Explain data munging or data wrangling?

300

Define linear regression?

328

Define feature vector?

373

Explain the difference between sas, r and python programming?

328

Explain data cleansing?

336

Explain the differences between univariate, bivariate and multivariate analysis?

305

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

333

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Un-Answered Questions { Data Science }

Which one you prefer R or Python for text analytics?

405

Can you cite some examples where a false negative important than a false positive?

363

A certain couple tells you that they have two children, at least one of which is a girl. What is the probability that they have two girls?

421

Pycharm has a debugger?

481

What is cart and chaid?

328

What are limitations of DBSCAN?

459

Find out K most frequent numbers from a given stream of numbers on the fly.

329

What makes the difference between “long” and “wide” format data?

320

Compare sas, r, python, perl?

344

What jupyter used?

310

Which laptop is best for data analysis?

357

Can you explain unsupervised learning?

383

What is the importance of selection bias?

343

What is machine learning? What is the difference between supervised and unsupervised methods?

334

How do you use goal seek in excel?

401

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