00:01
Hey there, welcome to numerate.
00:04
So we are asked here to find the regression equation looking at the measurements of our systolic and diastolic blood pressures.
00:14
So let's first write down our regression equation.
00:18
We have y predictor equals our y intercept a plus b, which represents the slope times x.
00:27
So knowing that this is our equation here, we can find our slope first.
00:33
So b is our slope where we have our equation, which we know it equals the sum of products divided by the sum of squares of x.
00:46
So our sum of products, we would have to find both the means of x and y.
00:52
So for x, we have 122.
01:06
For y, we have 79.
01:19
So knowing this here, we're going to divide this by the sum.
01:27
Of squares of x squared.
01:37
So with this here, we get a slope that equals around 0 .5729.
01:57
579...