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Data Science Interview Questions
Questions Answers Views Company eMail

What is meant by linear regression?

309

What do you understand by the selection bias?

317

What is machine learning? What is the difference between supervised and unsupervised methods?

332

How do you treat multicollinearity and heteroscedasticity in regression? Name some packages in r and python for building regression models.

341

What is logistic and linear regression?

349

How is bagging different from boosting?

374

What is an rdbms? Name some examples for rdbms? What is crud?

302

What is market basket analysis? How would you do it in r and python?

328

What is random forests?

348

How do you treat outlier data?

344

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

312

What is linear optimization?

321

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

351

Name some packages in r and python for building regression models.

315

What is f test?

425


Post New Data Science Questions

Un-Answered Questions { Data Science }

What is k-means? How can you select k for k-means?

341


What are independent graphics subsystems?

421


Define analytics?

326


What is market basket analysis? How would you do it in r and python?

328


What is the good measure of influence of a Twitter user?

316


Define linear regression?

327


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

346


Explain the method to collect and analyze data to use social media to predict the weather condition?

546


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 is bagging different from boosting?

374


What are recommender systems?

348


What is the goal of the clustering?

334


How will you prove that the square root of 2 is irrational?

313


What do you understand by term hash table collisions?

315


How often should an algorithm be updated?

327