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?

403

What is the common perception of visualization?

293

Explain about the box cox transformation in regression models?

302

What is the law of large numbers?

341

What is the role of the activation function?

323

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

311

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

386

How do data scientists code in r?

340

Please explain eigenvectors and eigenvalues?

301

What do you mean by cluster sampling and systematic sampling?

280

What is a linear regression in data science?

345

Explain the role of activation function?

323

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

323

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?

337

What are eigenvalue and eigenvector?

354

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Un-Answered Questions { Data Science }

How do you treat missing values during analysis?

329

What are decorators in Python?

1334

Where to seek help in case of discrepancies in tableau?

568

What is advantage of using apply family of functions in r? How do you use lambda in python?

381

How will you define the number of clusters in a clustering algorithm?

452

Can you explain systematic sampling?

342

How will you prove that the square root of 2 is irrational?

313

Explain the two main components of the hadoop framework?

345

What is column storage?

382

What is data science? How would you say it is similar or different to business analytics and business intelligence?

339

What do you understand by Poisson distribution?

326

Can you define power analysis?

337

What is a C ++ iterator?

309

What is data science? Also, list the differences between supervised and unsupervised learning.

323

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

352

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