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

Data Science Interview Questions

Questions Answers Views Company eMail

Develop an algorithm to sort two lists of sorted integers into a single list.

283

What are the different performance metrics for evaluating Uber services?

Uber,

284

Have you used sampling? What are the various types of sampling have you worked with?

WalMart,

289

What is the difference between an iterator, generator and list comprehension in Python?

WalMart,

322

Explain the difference between Supervised and Unsupervised Learning through examples.

Mu Sigma,

342

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

Facebook,

392

Print the elements of a matrix in zig-zag manner.

281

What is the difference between a bagged model and a boosted model?

WalMart,

305

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

Insight,

312

You own a clothing enterprise and want to improve your place in the market. How will you do it from the ground level ?

Mu Sigma,

277

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

Facebook,

277

A box has 12 red cards and 12 black cards. Another box has 24 red cards and 24 black cards. You want to draw two cards at random from one of the two boxes, which box has a higher probability of getting cards of same colour and why?

Goldman Sachs,

742

What is the probability of getting a HTT combination before getting a TTH combination?

Goldman Sachs,

273

How would add new Facebook members to the database of members, and code their relationships to others in the database?

Facebook,

334

How can you measure engagement with given Twitter data?

Twitter,

386

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Un-Answered Questions { Data Science }

What is a document database?

372

What is underfitting?

294

Explain the decision tree algorithm?

340

Is it possible to capture the correlation between continuous and categorical variable?

303

Estimate the number of square feet pizza's eaten in US each year.

310

Print the elements of a matrix in zig-zag manner.

281

Explain how to write a table to a file?

336

How to choose the right chart in case of creating a viz?

272

What is the difference between supervised and unsupervised methods?

327

What is a univariate analysis?

304

Why data science and data scientists are needed?

264

What is the procedure to check the cumulative frequency distribution of any categorical variable?

367

Count the total number of trees in United States.

299

What do you know about autoencoders?

318

Why do you need a for loop?

288

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