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Data Science Interview Questions
Questions Answers Views Company eMail

Which technique is used to predict categorical responses?

437

How to check the frequency distribution of a categorical variable?

359

What is collaborative filtering in data science?

404

Pycharm has a debugger?

484

How can you check if a data set or time series is random?

356

Which method in pandas.tools.plotting is used to create scatter plot matrix?

445

What is pylab?

432

What is the science of data in simple words?

347

How will you drop variables using indices in a data frame?

375

What is the difference between cluster and systematic sampling?

330

How will you check if an element 25 is present in a vector?

427

What are disadvantages of bootstrap development?

374

What jupyter used?

310

What does a data scientist do?

413

What’s the difference between pip and pip3?

381


Post New Data Science Questions

Un-Answered Questions { Data Science }

A stranger uses a search engine to find something and you do not know anything about the person. How will you design an algorithm to determine what the stranger is looking for just after he/she types few characters in the search box?

422


How do you use sql in sas, python, r languages?

355


Is jupyter open source?

326


Define cluster sampling?

335


You are given 50 cards with five different colors- 10 Green cards, 10 Red Cards, 10 Orange Cards, 10 Blue cards, and 10 Yellow cards. The cards of each colors are numbered from one to ten. Two cards are picked at random. Find out the probability that the cards picked are not of same number and same color.

461


How do you treat multicollinearity and heteroscedasticity in regression?

346


Explain the structure of artificial neural networks?

430


What do you understand by confusion matrix?

362


Explain the term binomial probability formula?

325


Differentiate between skewed and uniform distribution?

362


Explain while working on a data set, how do you select important variables?

343


What is the job of a data scientist?

350


How will you explain JOIN function in SQL to a 10 year old ?

396


What are feature vectors?

342


What is data science? Also, list the differences between supervised and unsupervised learning.

323