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

Data Science Interview Questions

Questions Answers Views Company eMail

Can you define a/b testing?

305

What cross validation technique would you use on time series data set? Is it k-fold or loocv?

301

Can you explain interpolation and extrapolation?

321

Can you explain difference between data modeling and database design?

349

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

338

Explain how can you assess a good logistic model?

316

Define cluster sampling?

323

Explain data munging?

376

Explain root cause analysis?

355

How is true positive rate and recall related?

282

Explain the differences between bivariate and multivariate analysis?

338

Explain interpolation and extrapolation?

313

Explain data wrangling?

338

Define a/b testing?

365

Explain unsupervised learning?

302

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Un-Answered Questions { Data Science }

Explain each data visualization in detail?

317

How long does it take to become a data scientist?

442

Define naive bayes?

307

What is the probability of getting a HTT combination before getting a TTH combination?

305

What is collaborative filtering in data science?

397

What do you understand by linear regression and logistic regression?

382

Explain unsupervised learning?

302

What is the difference between Stack and Queue

498

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?

326

Name some packages in r and python for building regression models.

309

Explain data wrangling?

338

What is the procedure to check the cumulative frequency distribution of any categorical variable?

398

How can you select k for k-means?

313

Is anaconda free?

320

What are the metrics you will use to track if Uber's paid advertising strategies to acquire customers work? How will you figure out the acceptable cost of customer acquisition?

296

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