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 do you understand by the term data science?

354

What do you understand by normal distribution?

495

Do you prefer python or r for text analytics?

326

Why is resampling done?

319

What is overfitting?

485

Where to seek help in case of discrepancies in tableau?

568

What are the feature vectors?

320

What do you understand by the selection bias? What are its various types?

328

What is selection bias and why does it matter?

325

What are numpy, scipy, and spark essential datatypes?

404

why is data cleaning important for analysis?

372

Can you compare the validation set with the test set?

336

Can you explain the difference between a validation set and a test set?

318

Differentiate between data modeling and database design?

329

What is the best programming language to use in data science?

365

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Un-Answered Questions { Data Science }

What are big data and data science?

431

Different between overfitting and underfitting?

426

Is macbook good for data science?

336

How many big Macs does McDonald sell every year in US?

320

What are the feature vectors?

320

What is nosql? Name some examples of nosql databases. What is a key value store? What is column storage? What is a document database?

295

Explain data cleansing?

335

Who can be scientific data there are three general steps to becoming a data scientist?

337

Could you draw a comparison between overfitting and underfitting?

407

Explain how to define the number of clusters in a clustering algorithm?

402

What will be your expected earnings with the two roll strategy?

502

Explain OLS in brief?

354

Pick up a coin C1 given C1+C2 with probability of trials p (h1) =.7, p (h2) =.6 and doing 10 trials. And what is the probability that the given coin you picked is C1 given you have 7 heads and 3 tails?

343

What does a data scientist do?

403

What is the best programming language to use in data science?

365

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