00:01
Hi, i'm david and i'm here to have you on your question.
00:03
Now let me bring up your question here.
00:05
In the question here, we are given the year of the study as one variable and the other the the s80 score as a second variable.
00:15
So if we call this one the x and this will be the y.
00:18
In the first question a, once you find the correction coefficient denoted by the r, the formula it will equal to the n times summation of the xy, minus summation of the x, times summation of the y, divided by the square root of the n times summation of the x squared minus summation of the x totally square times n times summation of the y square minus some much of the y square.
00:48
And it will block in the value into the formula.
00:51
We will have now we will have a zupon 5 419, 1, 444, 2, 463, 3, 456 and 448.
01:11
And then we will get the r, it will equal to the 0 .917.
01:19
Here i will round the answer to the four decimal presses will be the 7 .4.
01:24
And in the question b, we need to find the linear equation.
01:28
It has a formula of the white heart equal to the p0 plus the b1 times in the x...