OSO
24. Find the mean of the following distribution:
Class:
3-5 5-7 | 7-9
Frequency: 5 10 1 10
9-11 | 11-13 !
7
Answers
Answer:
Mean = 8.24
Step-by-step explanation:
We are given the following frequency distribution;
Class Frequency (f) X X*f
3 - 5 5 4 20
5 - 7 10 6 60
7 - 9 1 8 8
9 - 11 10 10 100
11 - 13 7 12 84
∑f = 33 ∑X*f = 272
Mean of given data, X bar =
= = 8.24
Therefore, mean of the following distribution is 8.24 .