0:00
Hello.
00:02
So what i have here is the information we have been put in a table.
00:08
So we have the arrival and then we have the frequency.
00:12
So in order to be able to answer the question full, do we need to fill the other four columns? so first of all we need to do x which is there's the arrival times the frequency.
00:21
So this is just going to be 0, it's going to be 36, 2 is going to be 114, 104, 10, we've got 80, we got 60, we've got 42, so you got 24, and the total.
00:56
So at that point, we can find the mean, which is salary of f over n, will be just 5, 5 ,500.
01:14
And that is going to be 2 .76.
01:20
So once we have this, we've done through the next column.
01:24
This is just x minus x bar.
01:27
We are arrival minus the mean.
01:29
So remember that the mean is what? it's 2 .76.
01:33
So we want to do that subtraction.
01:37
So this is going to be negative 2 .76.
01:45
Then we're negative 1 .76.
01:47
6, 0 .76, 0 .276.
01:54
And 0 .24, 2 .4, 2 .2 .2.
02:15
Just a second.
02:17
This is supposed to be, it's 4 .24.
02:26
It's 4 .24.
02:29
Finally, you get 5 .24.
02:32
So if you add them up, you get 11 .16.
02:36
6 and then the next column is just squaring that okay this is square the previous column if you square it you're going to get 2 point and if you square that you're going to get 7 .62 is 20 this is 0 .5 feet if there's 6 it's 1 .5 0 .5 .2 10 .5 .0 of 4 .24 squared that's 17 .98.
03:35
And the last one if we square that you get 27 .46 total that is 73 .84.
03:49
And the last column is multiplying the frequency c...