Factor s are variables to correspond categories. Categories are discrete in addition to non continuous. In statistics in that place is a necessitate for such a variable. Let us say, I curl the die a dozen times in addition to come upward up amongst values for each curl equally shown: 2,4,5,3,2,6,10,5, 9,6,4,5 I tin assemble these inwards a information equally shown inwards R amongst "dat": data --------------------------------- --------------------------------- Now I role ' factor ' equally used inwards R: facData=factor(data) -------------------- ----------------------- factor simply took ane unique exceptional from the listing presented to it to display inwards Levels . There were 2 4's, 3 5's in addition to 2 6's. It categorized them. While the master copy information was numeric they could hold upward also graphic symbol information inwards "datac" below: ------------------------------- We know the unique ones in...