Find the mean of each of the following frequency distributions:
class interval: 0-8 8-16 16-24 24-32 32-40
Frequency: 6 7 10 8 9
Answers
Answer:
Mean = 21.4
Step-by-step explanation:
We are given the following frequency distribution below;
Class Interval Frequency (f) X X*f
0 - 8 6 4 24
8 - 16 7 12 84
16 - 24 10 20 200
24 - 32 8 28 224
32 - 40 9 36 324
∑f = 40 ∑X*f = 856
Mean of the data, X bar =
= = 21.4 .
Therefore, mean of the following frequency distribution is 21.4 .