Suppose we have a data set named Exam$\_$Data$\_$Dr$\_$Bronlyn

In this data set, we have variables X and Y$.$

What R codes would we use to calculate an R$-$squared that helps describe the relationship between X and Y$?$

Question $4$ options:

summary$($Exam$\_$Data$\_$Dr$\_$Bronlyn$)$

average$($Y$)$

We need two commands. First, use Model $<-$ lm$($Y ~ X$,$ data$=$Exam$\_$Data$\_$Dr$\_$Bronlyn$),$ then use summary$($Model$)$

xtabs$($Exam$\_$Data$\_$Dr$\_$Bronlyn$)$