00:01
In this question, we were given class and corresponding frequency.
00:05
We are asked to find out the mean.
00:08
Here, class given is 135 to 139, 14 to 144, 145 to 144, 145 to 149, 145 to 149, 150 to 155 to 154, 155 to, 154, 155 to, 155 to, 154, 155 to, 155 to, 155 to, 155 to, 155 to, 155 to, 155 to, 155, 155.
00:37
159.
00:38
Here it is total...