A value of 324 is provided without explanation in a linear regression tutorial that I'm following. I checked to see if this was the number of samples, but they did not match.
Edit: My apologies for such an ill-formed question. The random_state argument is for scikit-learn's train_test_split function.
From the documentation, "If int, random_state is the seed used by the random number generator" so I can see that generating a random number is involved and I'm fairly certain that the utility of generating random numbers is to randomize the samples allocated to training/testing, but what I don't understand is why 324 was chosen.
The tutorial is here: https://www.youtube.com/watch?v=PjbTG5BNzL0&t=601s