How can you assess a good logistic model?

405

Please explain gradient descent?

335

What are the different performance metrics for evaluating Uber services?

321

What is the difference between cluster and systematic sampling?

326

Why data cleaning plays a vital role in the analysis?

381

How can bogus Facebook accounts be detected?

340

Define data discretization?

284

Now companies are heavily investing their money and time to make the dashboards. Why?

309

Explain the difference between sas, r and python programming?

319

Pick up a coin C1 given C1+C2 with probability of trials p (h1) =.7, p (h2) =.6 and doing 10 trials. And what is the probability that the given coin you picked is C1 given you have 7 heads and 3 tails?

336

How do you take millions of users with 100's of transactions each, amongst 10000's of products and group the users together in a meaningful segments?

424

What is linear optimization? Where is it used?

332

Case Study based questions - Cars are implanted with speed tracker so that the insurance companies can track about our driving state. Based on this new scheme what kind of business questions can be answered?

457

What are the differences between overfitting and underfitting?

418

If we added one rider to the current SF market, how would that affect the existing riders and drivers?

379