Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 33, 1111, 1616, 77, and 22 respectively. what are the relative frequencies of the five classes

1.) Sum the items or the class' frequencies:
     33 + 1,111 + 1,616 + 77 + 22 = 2859
2.) Divide each class' frequency by the total frequency:
     a = 33/2859
        = .012
     b = 1,111/2859
        = .389
     c = 1,616/2859
        = .565
     d = 77/2859
        = .027
     e = 22/2859
        = .008
3.) Therefore, the relative frequencies of each class are as follows:
    a = .012; b  = .389; c =.565; d = .027; e =.008

The mode of the numbers is 29.