The accompanying data set contains two numerical variables, xy and x$2-$a$.$ For x$2,$ how many of the observations are equal to $2?$b$.$ Sort x$,$ and then x$,,$ both in ascending order. After the variables have been sorted, what is the first observation for x$,$ andc. Sort x$,$ and then $*2,$ both in descending order. After the variables have been sorted, what is the first observation for x$,$ and x$2?$d$.$ Sort x$,$ in ascending order and a in descending order. After the variables have been sorted, what is the first observation for x$,$ and x$?$e$.$ How many missing values are there in X$,$ and x$2?$