00:01
Hi, i'm david and i'm here to help you answer your question.
00:04
Now let me pick up your question here.
00:07
In this question we want to discuss about the coefficient of variation describes the standard division as a percent of the mean.
00:16
And here we want to compute the coefficient of variation for the two variables, the height and the weight.
00:27
Now it means that we need to find the s, s and then we need to find the x bar as done for the standard division and x power for the mean.
00:38
So let's try to compute it from the height first.
00:42
For the height.
00:45
We have the x bar just equal to the sum everything we divide by.
00:50
We have one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve.
00:56
So let me count again.
01:02
Yeah, that's good.
01:03
So let me compute here for you.
01:05
So we have 80, 73, 67, 78, 68, 89, 69, 70, 74, 64, 66 and 74.
01:30
So we will have the x bar equal to the 72 .75.
01:38
Now next one want to find the standard division.
01:42
The formula will be the square root of each value will minus the xpar square divided by n minus 1...