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

Data Science Interview Questions

Questions Answers Views Company eMail

How do you treat multicollinearity and heteroscedasticity in regression?

306

What is logistic and linear regression? How do you treat multicollinearity and heteroscedasticity in regression?

263

What is an api?

320

What is nosql? Name some examples of nosql databases.

330

How do you build a custom function in python or r?

310

What is missing value imputation?

313

Define a sql query? What is the difference between select and update query? How do you use sql in sas, python, r languages?

330

How do you check for data quality?

294

What is advantage of using apply family of functions in r? How do you use lambda in python?

324

What is column storage? What is a document database?

346

What is association analysis? Where is it used?

330

How do you use goal seek in excel?

368

What is chi square test?

291

What is churn?

292

Where is association analysis used?

343

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Un-Answered Questions { Data Science }

Which laptop is best for data analysis?

315

What are the factors used to produce "People You May Know" data product on LinkedIn?

274

Differentiate between univariate, bivariate and multivariate analysis?

308

Can you define convex hull?

323

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

276

What is a recall?

313

What are the important skills to have in python with regard to data analysis?

288

What are the various classification algorithms?

309

How do you use lambda in python?

320

What is data science?

322

What is a univariate analysis?

304

Why do we need generators in Python?

398

Estimate the number of square feet pizza's eaten in US each year.

310

What are the differences between overfitting and underfitting?

373

What is cluster sampling in data science?

324

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