00:01
Let us represent cars sold as x and their values are given as 0, 1, 2, 3 and 4.
00:14
And let us represent number of sales rip as f of x, and their frequency are given as 4, 12, 7, 5 and 2.
00:35
Now adding all this will give the total of 30 sales reps.
00:43
Now the less than are equal to cumulative frequency.
00:49
In short, cf is calculated as by adding the previous cumulative frequency values for the first value of 0, the cumulative frequency is same as the frequency of 4.
01:09
And for the second one, the cumulative frequency is calculated as first 12 plus the previous cumulative frequency of 4, which gives the value of 16.
01:25
Now for third one, it is obtained as 7 which is the frequency of the class plus the cumulative frequency of the frequency class 16...