OpenStudy (anonymous):

a data set has the following points: (1,8) (2,7)(3,5) the slope of the linear regression line is -1.5 find the y intercept of the linear regression

6 years ago
OpenStudy (anonymous):

crap forgot this i kno i learnt it in data class

6 years ago
OpenStudy (anonymous):

I should note that I'm not the best in math, and trying to get better by doing what problems I can where I can, so if this is correct, glad I could help! :)

6 years ago
OpenStudy (anonymous):

Darn! Sorry for the bunk answer then. Hope I can be of help some other time.

6 years ago
OpenStudy (jim_thompson5910):

Sorry made a typo \[a=\frac{\sum Y - b\sum X}{N}=\frac{20-(-1.5)(6)}{5}=5.8\] So the equation is really \[y=5.8-1.5x\] or \[y=-1.5x+5.8\] So the y-intercept is (0,5.8)

6 years ago
OpenStudy (jim_thompson5910):

See this page for more info on regression http://easycalculation.com/statistics/learn-regression.php

6 years ago
OpenStudy (anonymous):

thank you

6 years ago