What is the correlation in r?

287

Write the code to sort an array in numpy by the nth column?

298

What is the central limit theorem and why is it important?

285

Can you explain difference between data modeling and database design?

312

Explain data preparation?

263

Name Methods to Calculate Distance Measure?

331

You are given two tables- friend_request and request_accepted. Friend_request contains requester_id, time and sent_to_id and request_accepted table contains time, acceptor_id and requestor_id. How will you determine the overall acceptance rate of requests?

308

Do you prefer python or r for text analytics?

275

what the aim of conducting a/b testing?

287

A certain couple tells you that they have two children, at least one of which is a girl. What is the probability that they have two girls?

377

Explain the benefits of using statistics by data scientists

294

Explain reinforcement learning.

248

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

304

What is the difference between Stack and Queue

440

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.

417