find for each credit rating $($of franchisees$)$ Think: grouping? the number of restaurants in each group $($alias NumRest$),$

the average annual sales in each group $($alias AvgSales$),$

and the average sales per square foot in each group $($alias AvgSalesPerFt$),$

With all the above the same $($except $5)),$

find the same info $(1,2,3,4)$ for those groups whose

average SalesPerSqFt are greater than the overall

AVG $($of the table$)$