00:01
So in this question, we are going to group, we are going to group this on our table.
00:11
So under that group, we have 1, 2, 3, 1 is for basketball, 2 is for baseball, and 3 is for hockey.
00:20
We have 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2 2, 2 2, 2 2 2, 2 2, 2 2 2, so when we add off our basketball samples, we get 16 .1.
00:38
You get 16 .1 for the baseball and we get 15 for the hockey.
00:44
So when we describe that you are going to get 259 .21, get 259 .21 and get you 259 .21.
00:56
So when you find the summation of the y1i, this will be equal to 47 .2.
01:05
And the summation of the y1 .2 will be equal to 743 when it's 4 2.
01:22
So now we know that n1 is equal to n2 is equal to n3 s5 which was on our table.
01:31
So we are going to find the summation of i and the summation from j, which is double summation of y i j squared so when you do that you are going to get one five to point nine four on our original table so now we can find for our sum of squared two which is equal to the sum of i of y i dot squared over n i minus the y dot dot squared over n sorry i so this will be equal to you have one over five 743 .42 minus 47 .2.
02:25
47 .2 squared over 15.
02:30
So the big end here is the population.
02:33
So it's 15...