A set of n = 15 pairs of scores (X and Y values) produces a ...

[Bernana]

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.

[Chou]

Answer to Question 1

B

Answer to Question 2

C

[Bernana]

TYSM

[Kedrick2014]

Excellent