00:02
You're giving these 30 data numbers, and the first thing you need to calculate is the mean, which means you're going to add all these up and divide by 30, and that gives you 2 .3.
00:21
So that is your mean.
00:28
Again, added up all the numbers and divided by 30.
00:31
And then to find the variance, we're going to subtract the mean from each number and then square the result.
00:49
Okay, so we're going to do 2 .6, and i'm going to change color.
00:53
For this.
00:55
For the 2 .6 minus the 2 .3 is 0 .3 and then you square it.
01:01
So that gives you 0 .09.
01:06
1 minus 2 .3 squared squared.
01:10
It gives you 0 .64.
01:15
2 .3 minus 2 .3 is 0 .3 is 0 and 0 squared is 0.
01:22
This will be 0 .16.
01:25
So i have other 2 .7s.
01:27
I'm going to point the 0 .16s with those.
01:29
Okay, i have 2 .6s again.
01:36
I'll try to get all those.
01:39
That's all i have for that.
01:40
Did i have any more 3 .1s? just so i don't repeat work.
01:45
Yeah, here.
01:50
Any more 2 .3s will be zeros...