Create a frequency distribution table with a class interval of 10 for the given harvest data.

a) To represent the data in a frequency distribution table with a class interval of 10, we first list all the given harvest values and then determine the minimum and maximum values.

The given data points are:
20, 40, 60, 55, 36, 69, 59, 78, 47, 66,
59, 70, 53, 24, 63, 50, 46, 38, 68, 57,
30, 65, 58, 61, 57, 86, 77,