I am doing a personal project to see how well does FIFA potential player stats predict the actual overall stat after 3 years.
- Meaning, if a player has a potential of 85 in 2015, how accurate should I expect it to be to predict the overall player score in 2018. Should I use R2 for this? Maybe MAPE?
- I also want to check if the histogram of errors (potential_2015 - overall_2018) has a normal distribution. Do I need to use Chi-squared for this?
- If the prediction is overestimating the player, I would like to know by how much. Should I use Standard Deviation on the errors?
If you have a list of key statistical tests, I would appreciate if you could list them so I can research and learn.