00:01
For this problem, first we need to find the range of the given set of numbers.
00:07
And the range is going to be the maximum minus the minimum.
00:13
And so in this case, the maximum is 34.
00:17
And the minimum is 4.
00:20
So the range is going to be 30.
00:23
Next, we need to find the population variance.
00:28
And to find the population variance, first we need the...
00:31
We need the mean.
00:33
So i'm going to find the mean by adding all these numbers.
00:42
And then i'm going to divide it by the total numbers that we have, which is 10.
00:48
And so this is going to equal 95 over 10 for a mean of 9 .5.
00:59
So that's the mean.
01:02
Next, to make things easier for me, i'm going to copy the set of, numbers going down in a column that will make things easier.
01:15
So we have 4 -9 -49 -39 - and 34.
01:30
I think i miss one.
01:31
Let me double -check a 4 -9 -10 -49 -49 -4 -34.
01:42
I forgot.
01:46
So i have a 9 -9 -4 and 34.
01:55
So we have a total of 10.
01:57
1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
02:00
Okay...