Author Question: In a regression problem the following pairs of (x, y) are given: (2,1), (2,-1), (2,0), (2,-2) and ... (Read 55 times)

piesebel · **on:** Jun 24, 2018

In a regression problem the following pairs of (x, y) are given: (2,1), (2,-1), (2,0), (2,-2) and (2,2). That indicates that the:
a. coefficient of correlation is -1.
b. coefficient of correlation is 0.
c. coefficient of correlation is 1.
d. coefficient of determination is between -1 and 1.

Question 2

Given the least squares regression line y = -2.88 + 1.77x, and a coefficient of determination of 0.81, the coefficient of correlation is:
a. -0.88.
b. +0.88.
c. +0.90.
d. -0.90.