Find the mean of the following distribution:
Answers
Mean = 19.92
Step-by-step explanation:
We are given the following frequency distribution below;
Class X Number of Students (f)
4 - 8 6 2 12
8 - 12 10 12 120
12 - 16 14 15 210
16 - 20 18 25 450
20 - 24 22 18 396
24 - 28 26 12 312
28 - 32 30 13 390
32 - 36 34 3 102
Total 100 1992
Now, the mean of the frequency distribution is given by the following formula;
Mean, =
=
= 19.92
Therefore, mean of the given distribution is 19.92.