00:01
There are given 60 values here and we have to construct the frequency table here.
00:05
First of all, let's find the class width.
00:07
For the class with, we need the range value.
00:10
The range is the maximum minus the minimum value.
00:14
So the maximum value here is 142.
00:17
The minimum value is 69.
00:19
If you just subtract this number, this is 142 minus 69.
00:24
That would be 7 .3.
00:26
So what we need, we need seven classes here.
00:28
So the class width, which is equal to the range over the number of classes, which is almost 10.
00:38
Let's say, 4.
00:39
So if i just run this number up, we will get 11.
00:42
So the class width would be 11 here.
00:45
So let me just write the classes.
00:47
So the minimum number we have 69 here.
00:50
Add 11, which is 80, add 1191.
00:54
This is 102.
00:56
1 .13, 124, 135.
01:02
One, two, three, four, five, six, seven, great.
01:05
And the next one is 79, the next one is 90.
01:08
This is 101, this is 112, 12, 123, and 134, and this is 145.
01:17
And what about the frequency here? so the frequency.
01:20
The number of elements between 69 and 79.
01:25
We have one, two, just two numbers here.
01:28
And the number of elements between 80 and 90, one, two, three.
01:32
Grade three numbers between 91 and 101 one two three four five six seven eight eight numbers between 102 and one twelve one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen uh sixteen seventeen so there are seventeen numbers and between one hundred thirteen and one hundred twenty three one two three four five six 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17.
02:14
And 18, 19, 20, 21, 23, 23, 23, and 134, which is 1, 2, 3, 3 numbers, and we have 3 numbers left.
02:29
So let's just add these values and check.
02:32
We will get 60 here.
02:33
This is 513 30 53 is that 59 13 50 sorry this is 513 53 oops uh 1 2 3 1 2 3 4 5 6 7 so between 1 24 and 13 4 we have 1 2 and 3 numbers great and 1 13 and 1 13 and 1 13 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 21, 22, 23.
03:29
Let me just check this one again.
03:31
This is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 13, 14, 14, 14, 15, 15, 17, 17, 17, 15, 16, 18, 16, 17, 18, 19, 20, 21, 22.
03:49
So there are 22 numbers here.
03:53
So let me just check these values and that should be 19 and this is 22.
03:57
Great...