Interview Question

Given a list of timestamps in sequential order, return a list of lists grouped by week (7 days) using the first timestamp as the starting point. Example:   ts = [ '2019-01-01', '2019-01-02', '2019-01-08', '2019-02-01', '2019-02-02', '2019-02-05', ]

Making it harder, given a list of stock prices and date times in ascending order by datetime, write a function that outputs the profit and start and end dates to buy and sell for max profit.

Given a list of stock prices in ascending order by datetime, write a function that outputs the max profit by buying and selling at a specific interval.

Why Mu-sigma?

How does experimental data contrast with observational data?

Provide a simple example of how an experimental design can help answer a question about behavior.

How can data management procedures such as missing data handling make it worse?

Explain selection bias (with regard to a dataset, not variable selection). Why is it important?

What is the optimization problem for a SVM?

How to test the difference between means of 2 populations