A reliability coefficient (r) and a standard error of measurement ...

[theo]

A reliability coefficient (r) and a standard error of measurement (SEM) were computed on a test with 10 items. What would happen to those statistics if the test were increased to forty items?
 
  A. r would decrease, SEM would increase.
  B. r would decrease, SEM would stay the same.
  C. r would increase, SEM would decrease.
  D. r would increase, SEM would stay the same.

Question 2

Whenever the reliability coefficient is low, the standard error of measurement will be:
 
  A. zero.
  B. low.
  C. high.
  D. unchanged.

[millet]

Answer to Question 1

C

Answer to Question 2

C