Author Question: A set of n = 25 pairs of scores (X and Y values) has a Pearson correlation of r = 0.80. How much of ... (Read 129 times)

FButt · **on:** Jun 20, 2018

A set of n = 25 pairs of scores (X and Y values) has a Pearson correlation of r = 0.80. How much of the variance for the Y scores is predicted by the relationship with X?

A) 0.36 or 36
B) 0.20 or 20
C) 0.80 or 80
D) 0.64 or 64

Question 2

Which of the following is directly addressed by the null hypothesis?

A) The population before treatment
B) The population after treatment
C) The sample before treatment
D) The sample after treatment