# Splitting the Dataset into Training and Testing Setsset.seed$(123)$trainIndex $<-$ createDataPartition$($HAR$\_$walk$\_$FE$Type, p $=0\mathrm{.}8,$ list $=$ FALSE$)$trainData $<-$ HAR$\_$walk$\_$FE$[$trainIndex$,]$testData $<-$ HAR$\_$walk$\_$FE$[-$trainIndex, $]$

For the r code $,$ what the difference if use p $=0\mathrm{.}7,$ or p $=0\mathrm{.}75?$