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 bayesian estimate and maximum likelihood estimation (mle)?

285

Why is it mandatory to clean a data set?

342

What tools or devices help you succeed in your role as a data scientist?

319

A test has a true positive rate of 100% and a false-positive rate of 5%. There is a population with a 1/1000 rate of having the condition the test identifies. Considering a positive test, what is the probability of having that condition?

339

What is meant by supervised and unsupervised learning in data?

275

Why do you want to work at this company as a data scientist?

270

What are outlier values?

385

How to work towards a random forest?

390

What devices or tools help you most as a data scientist?

265

Explain the goal of a/b testing?

289

What are the various types of selection bias?

317

Please explain the goal of a/b testing.

306

Do gradient descent methods always converge to the same point?

415

Explain how to define the number of clusters in a clustering algorithm?

370

What is meant by sampling? Explain some sampling methods that you know?

279

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Un-Answered Questions { Data Science }

Can you provide examples for other computations in spark?

234

What do you understand by l1 and l2 regularization methods?

282

Python is enough for data science ?

310

What is a document database?

371

How is data modeling different from database design?

281

How do data management procedures like missing data handling make selection bias worse?

451

What do you mean by survival analysis in R?

350

How to run a pycharm debugging?

379

Why is data cleaning essential in data science?

264

What is meant by Poisson regression?

338

Define a/b testing?

334

How will you compare the results of various machine learning algorithms?

334

How can you build and test a metric to compare ranked list of TV shows or Movies for two Netflix users?

525

What is logistic and linear regression?

302

what is the difference between extrapolation and interpolation?

308

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