00:01
All right, to find the mean, we're going to add them all up and divide.
00:03
So the mean equals how many decimal places? it doesn't say.
00:12
We'll go to.
00:13
The mean is 30 .87.
00:22
The standard deviation is 8 .48.
00:39
The variance is 71 .91.
00:53
We need to find the quartile.
00:56
Oh, and it's not in order.
01:00
So now we need to put data in order.
01:03
So i'm going to do that real quick.
01:13
I'm going to pause it while i write them all down in order.
01:20
Okay, i have them all listed in order now.
01:22
So now i can find my median, and then i can find my first and second quartiles.
01:28
So there are a total of 29 in the data set.
01:33
So 29 about about 2 it's 14 so 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 that's my median so the median is 30 .8 the first quartile so 1 2 3 4 5 6 7 1 2 3 4 5 6 7 so here's my q 1 2 2 2 2 25 6 7 so here's my q 1 2 2 1 8 point six plus two fifty two point two divided about two so this is q1 so q1 is 24 .9 q3 1 2 3 1 2 3 4 5 6 7 1 2 3 4 6 7 so 38 .1 plus 38 .7 divided by 2 that's 38 .4 is our q3.
03:20
So 24 .9, 38 .4.
03:29
So to find our lower boundaries and our upper boundaries, say the lower, we do 24 .9 minus 1 .5 times 30 .8.
03:45
Oh, we can find our iqr.
03:46
That is not right.
03:54
24 .9, 13 .5.
04:12
All right, so 24 .9 times 1 .5, parentheses, 13 .5...