00:01
Hey there, welcome to numerate.
00:02
We are asked to find the correlation coefficient here.
00:07
So we are given the values above for the college test and the final examination.
00:14
So let's go ahead and write the correlation coefficient equation.
00:19
We have the sum of products divided by the square root of the sum of squares of x x minus the sum of squares of y.
00:31
So this here, we are going to be finding the sum of squares.
00:37
So let's actually do some products first, in which we are going to be plugging in the mean.
00:42
So x minus the mean.
00:46
So you would have to find the x mean and the y mean.
00:49
This should be around 51, 1 multiplied by the sum of y minus the y mean, which should be around 51 .43...