Point72 Interview Questions

What happens to the F-statistic and t-statistic if you replicate the data in a dataset?

Explain bias and variance. Which models tend to have higher bias versus higher variance?

Can a tuple or a list be used as a key in a dictionary?

What are the assumptions required for linear regression?

How much should you be willing to pay to play the following game? You start with $1. You flip a fair coin. If it lands on heads, you double your winnings and flip again. If it lands on tails, the game is over and you collect the money you've won. You continue playing until you land on tails.

How would you create a predictive model of y given x, where x is a continuous variable between 0 and 10 and is linear on the integers? Follow-up: If you model this using 10 separate regressions, what would be the effect? If you average the regressions at the integers, would these be biased estimates?

What are the assumptions of linear regression?

Can you explain logistic regression to someone who is not familiar with it?

Given a table containing names and ages with some duplicate entries, how would you return all duplicate rows using SQL?