In this video we look at the Group By, Rollmean, and Case When functions in R for sports scientists to utilize when looking at team datasets. Group By allows the practitioner to break data down on an individual basis. The rollmean function generates a moving average of data, and helps show trends in data and eliminates the potential skew from outlier data points. The Case When function operates like If Else functions, but allows more opportunities when dealing with many outputs.
