Problem $5.$

You are provided with the following two data sets:The data sets each have $3$ variables, ID$,$ GRADE and PROF. Combine these two data sets into one called GRADES and keep only variables ID and GRADE. Calculate the variable PER which is the GRADE expressed as a percentage $($scale $0-1).$ Assign a letter grade $($A$,$B$,$C etc.$)$ using standard cut$-$off points $(\mathrm{.}9-1$A;$\mathrm{.}8-\mathrm{.}89$B;$\mathrm{.}7-\mathrm{.}79$C etc.$)$ based on PER variable, and call it LETGR. You can do this using IF$-$THEN$-$ELSE or SELECTWHEN$-$OTHERWISE structures.English $($United States$)$Accessibility: UnavailableFocus