Finite math help

[tofu]

have some questions

first, i would like to know what are the similarities and differences for the above terms..

also, a correlation coefficient ranges from -1 to 1 while correlation determination ranges from 0 to 1,

why cant the correlation determination be negative?
what cant the correlation coefiicient be over 1?

 

[cookiemonster]

And the "above terms" are...?

r may range from -1 to 1, but when you square it, then negative goes away. $(-.5)^2 = .25$.

cookiemonster