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Data Science Interview Questions
Questions Answers Views Company eMail

What are the major skills data scientist need?

298

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

416

Can you explain cross-validation?

289

Can you explain data cleansing?

317

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

323

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

342

Can you explain supervised learning?

308

How do you understand by bias variance trade off?

318

Can you explain data munging or data wrangling?

315

What is difference between sas, r and python programming?

369

Can you define feature vector?

307

What is data scientist?

347

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

299

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

316

Can you define data discretization?

264


Post New Data Science Questions

Un-Answered Questions { Data Science }

Which is the standard data missing marker used in pandas?

351


What is the differences between univariate, bivariate and multivariate analysis?

357


What are the principal components?

341


Explain the difference between data science and data analytics?

351


Define a sql query? What is the difference between select and update query?

362


What is the difference between a cluster and systematic sampling?

329


What is the return type of the function ID?

328


Which technique is used to predict categorical responses?

430


Can you explain eigenvalue and eigenvector?

337


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

339


What do you do as a data scientist?

339


Count the total number of trees in United States.

329


What is churn?

318


What are recommender systems?

339


What is cart and chaid? How is bagging different from boosting?

309