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?

319

Explain recommender system?

334

Explain the two main components of the hadoop framework?

345

Define analytics?

330

Explain the difference between data modeling and database design?

329

Define data reduction?

293

Explain data munging or data wrangling?

302

Define linear regression?

331

Define feature vector?

376

Explain the difference between sas, r and python programming?

330

Explain data cleansing?

339

Explain the differences between univariate, bivariate and multivariate analysis?

305

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

335

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Un-Answered Questions { Data Science }

Explain the importance of 80/20 rule in model validation?

332

How are confidence intervals constructed and how will you interpret them?

314

What are you employed pip?

344

What is an outlier? How do you treat outlier data?

299

Explain auto-encoder

335

What is missing value imputation?

354

What is the importance of selection bias?

343

How regularly must an algorithm be updated?

368

Can you define data reduction?

301

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

356

What is jupyter ?

366

Name some packages in r and python for building regression models.

317

How have you overcome a barrier to finding a solution?

304

How would you do market basket analysis in r and python?

368

How can you iterate over a list and also retrieve element indices at the same time?

336

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