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 makes scientific data?

353

What are feature vectors?

342

Among python and r, which one is generally preferred for text analytics?

345

What is the difference between a cluster and systematic sampling?

340

Describe some assumptions considered important for linear regression?

312

What is selection bias?

339

Differentiate between type I and type ii error?

337

Give an example of a data set that has a non-gaussian distribution?

349

What is the importance of data cleaning in analysis?

319

Describe the various steps involved while carrying out an analytical project?

328

Different between overfitting and underfitting?

426

Differentiate between skewed and uniform distribution?

362

Why is dimensional reduction performed before fitting a support vector machine (svm)?

366

What is the importance of selection bias?

343

What is the purpose of a/b testing?

340

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Un-Answered Questions { Data Science }

What is the goal of A/B Testing?

381

What kind of product you want to build at LinkedIn?

312

What do you understand by confusion matrix?

362

What is data scientist?

357

What do you understand by clustering?

307

How do data scientists code in r?

340

How often should an algorithm be updated?

327

what is bias?

357

What is the best programming language to use in data science?

365

You own a clothing enterprise and want to improve your place in the market. How will you do it from the ground level ?

309

Explain how to merge the files into a single dataframe?

361

Can you explain supervised learning?

314

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 do you understand by the job description of data scientist?

339

What is missing value imputation? How do you handle missing values in python or r?

353

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