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

Data Science Interview Questions

Questions Answers Views Company eMail

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

323

Explain supervised learning?

341

Explain the difference between an analyst and a data scientist?

327

Explain the differences between univariate and multivariate analysis?

440

Explain data preparation?

318

Explain the differences between univariate and bivariate analysis?

336

Define power analysis?

344

Explain systematic sampling?

332

Explain the difference between data science, machine learning and artificial intelligence?

318

Define data discretization?

299

Which database is best for data science?

334

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Un-Answered Questions { Data Science }

Can you define cluster sampling?

425

Explain p-value?

386

What are the variants of back propagation?

356

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

364

What is term Pearson’s Correlation Coefficient?

374

Explain auto-encoder

337

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

424

What do you mean by graphics devices in data visualization?

325

What are an eigenvalue and eigenvector?

324

Why L1 regularizations causes parameter sparsity whereas L2 regularization does not?

424

What are the drawbacks of the linear model?

355

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

458

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

310

Explain the benefits of using statistics by data scientists

356

Define standard deviation, mean, mode and median.

449

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