>Ever taken statistics courses? You're not doing multiple regression analysis on real world data on day 1. On day 1 you're learning odds using playing cards and coin flips.

Curiously enough, my undergrad statistics textbook was loaded with problems where the data was taken straight from a journal paper. The book has poor reviews on Amazon, but I think it's the best I've seen.

https://www.amazon.com/Probability-Statistics-Engineering-Sc...