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Data Science Interview Questions
Questions Answers Views Company eMail

What are the major skills data scientist need?

308

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

424

Can you explain cross-validation?

294

Can you explain data cleansing?

326

What is the difference between an analyst and a data scientist?

337

What do you understand by type I vs type ii error?

349

Can you explain supervised learning?

314

How do you understand by bias variance trade off?

331

Can you explain data munging or data wrangling?

322

What is difference between sas, r and python programming?

379

Can you define feature vector?

313

What is data scientist?

355

What is the advantage of performing dimensionality reduction before fitting an svm?

304

How is true positive rate and recall related? Write the equation.

322

Can you define data discretization?

270


Post New Data Science Questions

Un-Answered Questions { Data Science }

Can you explain supervised learning?

314


Define the term deep learning?

335


Discuss normal distribution

388


Could you draw a comparison between overfitting and underfitting?

407


What is random forests and how is it different from decision trees?

313


Which language is best for text analytics? R or python?

315


What is back propagation?

330


How to determine the number of clusters in k-means clustering algorithm?

303


What is a document database?

402


Explain each data visualization in detail?

320


What is the roc curve?

350


What is an api?

376


A box has 12 red cards and 12 black cards. Another box has 24 red cards and 24 black cards. You want to draw two cards at random from one of the two boxes, which box has a higher probability of getting cards of same colour and why?

775


what the aim of conducting a/b testing?

332


From a long sorted list and a short 4 element sorted list, which algorithm will you use to search the long sorted list for 4 elements.

328