Why is Python used in data science?

372

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

Can you provide an example of features extraction?

340

What is f test?

433

Define a sql query? What is the difference between select and update query?

377

Can you define a/b testing?

329

What would you do to summarize a Twitter feed?

349

What is the difference between iterator and generator in Python?

410

Explain data preparation?

318

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

315

What are outlier values and how do you treat them?

393

What is a random forest?

313

Can you cite some examples where a false negative important than a false positive?

365

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?

435

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

351