In R language

Build tables to do the following with the iris data set: (Remember the iris data set is in base R) 1. Calculate the average Sepal.Length by Species 2. Calculate the average Sepal.Width by Species 3. Calculate the average Pedal.Length by Species 4. Calculate the average Pedal.Width by Species Use the mtcars dataset to create the following tables: (Remember the mtcars data set is in base R) 1. Median mpg by cyl and vs (V or straight engine). 2. Median mpg by cyl, vs (V or straight engine), and gear. 3. Median disp by cyl, vs (V or straight engine), gear, carb in a flat table