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 is machine learning and how can it be used for time series analysis?

267

Explain recommender systems?

317

State the difference between a validation set and a test set?

305

while working on a data set, how can you select important variables? Explain

337

What is a linear regression?

321

What is skewed distribution & uniform distribution?

298

Discuss decision tree algorithm?

270

What is back propagation?

285

List out the libraries in python used for data analysis and scientific computations?

276

What is a univariate analysis?

304

Name commonly used algorithms.

368

Explain why data cleansing is essential and which method you use to maintain clean data?

298

what is prior probability and likelihood?

335

Explain eigenvalue and eigenvector

290

Define boltzmann machine

282

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Un-Answered Questions { Data Science }

Name the packages that are based on density based on the algorithm?

265

What do you understand by normal distribution?

444

What education is required for data science role?

288

Which database is best for data science?

292

What is Survival Analysis?

316

What is an outlier? How do you treat outlier data?

270

What would you do to summarize a Twitter feed?

319

How do you build a custom function in python or r?

311

How can you solve a problem that has no solution?

280

what is prior probability and likelihood?

335

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

357

Discuss decision tree algorithm?

270

Different between overfitting and underfitting?

368

How have you overcome a barrier to finding a solution?

265

What is the job of a data scientist?

317

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