I’ve made a full kernel on Kaggle. Everything is summarized and explained in the kernel, but I’m just gonna succinctly go over it on this post as well. So if you’d like to see the full report, I recommend you to go to the link below. Additionally, I’m a newbie trying out data analysis, so don’t get your expectation too high. ‘^’

Starcraft League Index Linear Regression on Kaggle

Abstract

The final model (equation) was :

LeagueIndex = 0.0212(Age) + 0.0099(HoursPerWeek) + 31.3489(SelectByHotkeys) + 874.1684(AssignToHotkeys) + 0.0297(UniqueHotkeys) + 1050.7058(MinimapAttacks) + 692.5465(NumberOfPACs) - 0.0104(GapBetweenPACs) + 0.1599(ActionsInPAC) - 0.0069(TotalMapExplored) + 185.1212(WorkersMade)

While the final model showed decent result in terms of the OLS summary in python, I found a huge problem when I was doing Residual Analysis. The LeagueIndex (Y ; Dependent Variable) is a discrete/categorical type. Literal facepalm moment. So basically this means that linear regression isn’t the right tool to use! If I wanted to stick with regression, I should do a logistic regression or I could do a more advanced approach and apply machine learning.

Lesson Learnt (the hard way) : ALWAYS understand data before using any analysis tool!

I’m thinking of actually doing a simple Logistic Regression with R, so will post it up later when I’ve done it ;)

Final Thoughts

I’ve learnt linear regression in a very short time (in R) and don’t know much about it. I wanted to try regression with Python and overall it wasn’t as good as R. So, I think I will stick with R on regressions and simple machine learning. Overall great experience.