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?

322

Explain the differences between univariate and multivariate analysis?

440

Explain data preparation?

316

Explain the differences between univariate and bivariate analysis?

333

Define power analysis?

344

Explain systematic sampling?

330

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

317

Define data discretization?

299

Which database is best for data science?

333

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Un-Answered Questions { Data Science }

Why is dimensional reduction performed before fitting a support vector machine (svm)?

370

How regularly must an algorithm be updated?

372

Can you explain data preparation?

351

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

320

What does ITER () do in Python?

468

Can you define a/b testing?

327

Can you define data discretization?

275

Estimate the probability of a disease in a particular city given that the probability of the disease on a national level is low.

347

A jar has 1000 coins, of which 999 are fair and 1 is double headed. Pick a coin at random, and toss it 10 times. Given that you see 10 heads, what is the probability that the next toss of that coin is also a head?

1474

What is data science?

366

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

335

What is an Eigenvalue and Eigenvector?

350

Explain box cox transformation?

393

Name the methods for General component analysis and explain them?

399

What are iterators in Python?

384

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