Author Question: A set of n = 15 pairs of scores (X and Y values) produces a correlation of r = 0.40. If each of the ... (Read 51 times)

Bernana · **on:** Jun 20, 2018

A set of n = 15 pairs of scores (X and Y values) produces a correlation of r = 0.40. If each of the X values is multiplied by 2 and the correlation is computed for the new scores, what value will be obtained for the new correlation?

A) r = 0.20
B) r = 0.40
C) r = 0.80
D) This cannot be determined without knowing all the X and Y scores.

Question 2

What happens to the expected value of M as sample size increases?

A) It also increases.
B) It decreases.
C) It stays constant.
D) The expected value does not change in a predictable manner when sample size increases.