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

Data Science Interview Questions

Questions Answers Views Company eMail

How make you 3d plots/visualizations using numpy/scipy?

393

What is the common perception of visualization?

289

Explain about the box cox transformation in regression models?

295

What is the law of large numbers?

336

What is the role of the activation function?

315

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

307

Do we have different selection biases, if yes, what are they?

380

How do data scientists code in r?

332

Please explain eigenvectors and eigenvalues?

297

What do you mean by cluster sampling and systematic sampling?

273

What is a linear regression in data science?

337

Explain the role of activation function?

317

What is the central limit theorem and why is it important?

319

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

327

What are eigenvalue and eigenvector?

348

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Un-Answered Questions { Data Science }

Why is Python used in data science?

357

What is correlation in R?

387

Can you explain eigenvalue and eigenvector?

338

What is the importance of data cleaning in analysis?

314

Write the code to reverse a Linked list.

425

What do you mean by the term linear regression?

332

Can you explain unsupervised learning?

375

Please explain recommender systems along with an application?

351

Explain the benefits of using statistics by data scientists

343

Explain each data visualization in detail?

318

What do you understand by the term data science?

340

You are at a Casino. You have two dices to play with. You win $10 every time you roll a 5. If you play till you win and then stop, what is the expected pay-out?

360

What skills do I need to be a data scientist?

330

Name some kinds of graphs and explain how you would build them in python or r.

305

Define data discretization?

284

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