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?

300

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

418

Can you explain cross-validation?

290

Can you explain data cleansing?

318

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

325

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

343

Can you explain supervised learning?

309

How do you understand by bias variance trade off?

319

Can you explain data munging or data wrangling?

318

What is difference between sas, r and python programming?

372

Can you define feature vector?

308

What is data scientist?

348

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

300

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

317

Can you define data discretization?

265

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Un-Answered Questions { Data Science }

How will you cut a circular cake into 8 equal pieces?

299

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

335

Define a sql query?

331

What is the goal of A/B Testing?

367

What is a/b testing in data science?

339

What is correlation in R?

387

How many people are using Facebook in California at 1.30 PM on Monday?

421

State some use cases where Hadoop MapReduce works well and where it does not.

336

What do you understand by clustering?

301

How do you use lambda in python?

355

How different is a mean value different from expected value?

416

What are outlier values and how do you treat them?

383

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

359

Explain the two main components of the hadoop framework?

338

What is cluster sampling?

417

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