Find the mean of each of the following frequency distributions:
class interval: 0-6 6-12 12-18 18-24 24-30
Frequency: 7 5 10 12 6
Answers
Answer:
Mean = 15.75
Step-by-step explanation:
We are given the following frequency distribution below;
Class Interval Frequency (f) X X*f
0 - 6 7 3 21
6 - 12 5 9 45
12 - 18 10 15 150
18 - 24 12 21 252
24 - 30 6 27 162
∑f = 40 ∑X*f = 630
Mean of the data, X bar =
= = 15.75 .
Therefore, mean of the following frequency distribution is 15.75 .