The following figures show how many people visited an art gallery each day for 50 days;

32 39 30 60 53 54 35 51 13 42

36 43 44 44 38 39 52 25 30 58

28 27 31 44 29 46 49 42 47 51

43 34 52 50 39 53 51 20 38 20

54 33 35 45 51 59 19 28 34 25

a. Using the interval of 11-20, 21-30 etc, arrange the figures in classes and obtain the frequency distribution.

b. Calculate the mean, median and mode.