Least squares regression line (I'm very very lost)

[Melody55]

Hi! Basically this is the exercise:

Given the covariance of x and y is -12 and the variance of x is 6,5, using the least squares line of best fit connecting x and y yo estimate the value of x when y=15

x	2	5	9	7	9	10	7
y	25	17	11	10	8	7	13

any help would mean everything, I'm desperate

 

[Deleted member 4993]

Hi! Basically this is the exercise:

Given the covariance of x and y is -12 and the variance of x is 6,5, using the least squares line of best fit connecting x and y yo estimate the value of x when y=15

x	2	5	9	7	9	10	7
y	25	17	11	10	8	7	13

any help would mean everything, I'm desperate

Please view -

Covariance and the regression line (video) | Khan Academy

Covariance, Variance and the Slope of the Regression Line

www.khanacademy.org

Come back if you have further question.

Given the covariance of x and y is -12 and the variance of x is 6,5, using the least squares line of best fit connecting x and y yo estimate the value of x when y=15

x	2	5	9	7	9	10	7
y	25	17	11	10	8	7	13