First time using GitHub, do you just upload your data file to the repository?

Sorry it's a noob question, please be kind because I'm new to programming. I did something in R for work and I want to add it to GitHub. I've found a synthetic data file to use instead of the private data I originally used.

Do I just add the synthetic data to the repository? I tried to do read url in R from where the synthetic data is stored but it's a 7zip file so I don't think I can …

data datascience file found github kind private data programming question something synthetic synthetic data work