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?

311

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

307

Can you explain interpolation and extrapolation?

329

Can you explain difference between data modeling and database design?

361

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

343

Explain how can you assess a good logistic model?

323

Define cluster sampling?

333

Explain data munging?

384

Explain root cause analysis?

362

How is true positive rate and recall related?

289

Explain the differences between bivariate and multivariate analysis?

353

Explain interpolation and extrapolation?

325

Explain data wrangling?

344

Define a/b testing?

377

Explain unsupervised learning?

309

Post New Data Science Questions

Un-Answered Questions { Data Science }

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

301

What are the feature vectors?

320

What is logistic and linear regression?

349

What will you do if removing missing values from a dataset cause bias?

364

What is difference between sas, r and python programming?

379

How to choose the right chart in case of creating a viz?

315

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

304

What laptop should I buy for data science?

343

What is the correlation in r?

332

Give some situations where you will use an SVM over a RandomForest Machine Learning algorithm and vice-versa?

460

How is data science different from data analytics?

344

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

320

You have been given the data on Facebook user's friending or defriending each other. How will you determine whether a given pair of Facebook users are friends or not?

366

What is correlation in R?

391

Define a sql query? What is the difference between select and update query? How do you use sql in sas, python, r languages?

384

For More Un-Answered { Data Science } Questions Click Here