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

Data Science Interview Questions

Questions Answers Views Company eMail

What is the difference between select and update query?

403

What is association analysis?

321

How do you do for loops in python and r?

366

What is data science? How would you say it is similar or different to business analytics and business intelligence?

339

What is an outlier? How do you treat outlier data?

295

What is column storage?

382

How is random forests different from decision trees?

432

Name some kinds of graphs and explain how you would build them in python or r.

314

How do you do data import in sas?

341

What is churn? How would it help predict and control churn for a customer?

362

Which package is used to do data import in r and python? How do you do data import in sas?

333

What is clustering? What is the difference between kmeans clustering and hierarchical clustering?

393

What is advantage of using apply family of functions in r?

353

How do you use lambda in python?

361

What is the difference between kmeans clustering and hierarchical clustering?

424

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Un-Answered Questions { Data Science }

How different is a mean value different from expected value?

421

What are independent graphics subsystems?

421

What do you understand by bias, variance trade-off?

333

What do you understand by confusion matrix?

362

Explain Examples of Data Science?

341

What laptop should I buy for data science?

343

Is it possible to perform logistic regression with Microsoft Excel?

384

What is the degree of freedom for lasso?

353

What is meant by selection bias?

379

How will you overcome overfitting in predictive models?

438

What is the central limit theorem and why is it important?

323

What is the correlation in r?

332

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

334

What is missing value imputation?

352

What is supervised learning?

306

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