As of 2011, the following are the ages at which a country's presidents were inaugurated.
45, 54, 59, 59, 50, 44, 47, 69, 50, 50, 65, 42, 43, 45, 63, 44, 55, 61, 44, 51, 45, 54, 64, 50, 47, 50, 50, 60, 57, 44, 68, 59, 57, 56, 56, 60, 43, 56, 54, 59, 44, 55, 46, 58
Construct a grouped frequency distribution for the data. Use 41 - 45 for the first class and use the same width for each subsequent class
Class Frequency
41-45 4
46-50 10
51-55 7
56-60 11
61-65 2
66-70 5