Question

A study of the yield of 150 tomato plants, resulted in the record:

Tomatoes per Plant	1 - 5	6 - 10	11 - 15	16 - 20	21 - 25
Number of Plants	20	50	46	22	12

What is the frequency of the class preceding the modal class?

Answer 1

Tomatoes per Plant	Mid-Point (x)	Number of Plants (f)	fx
1 - 5	3	20	60
6 - 10	8	50	400
11 - 15	13	46	598
16 - 20	18	22	396
21 - 25	23	12	276
Total		150	1730

The frequency of the class preceding the modal class is 20.