6 The following data sets gives the approximate lengths of Beet and Mahler s nine symphonies in minutes 38 26 68 50 33 30 40 52 85 94 50 72 72 80 90 80 a Find the mean median and range for each of the two data sets Beethoven Mean Beethoven Median Beethoven Mode Beethoven 28 36 Mahler Beethoven Range 71 Mahler Mean Beethoven standard deviation Mahler Median Mahler Mode Mahler Range b Find the standard deviation for each of the data sets