00:01
So in this question we are given some scores and frequencies.
00:05
The scores are given as classes.
00:08
The question has three sub -question.
00:10
The first question is to find the class midpoint for first class.
00:14
The second question is to find class midpoint for second class.
00:18
And the third one, we have to find the mean score using the frequency table.
00:24
So the data is score and frequency.
00:30
So the first class is 61 to 70.
00:45
The corresponding frequency is 2.
00:48
Second classes 71 to 80.
00:53
Corresponding frequency is 4.
00:55
The third class is 81 to 90.
01:00
The corresponding frequency is 5.
01:03
And fourth classes 91 to 100.
01:07
The corresponding frequency, a for this class is 1.
01:13
So here the first question is to find the class midpoint for first class...