The standard deviation of a particular WISC-III subtest is 3, and ...

[acc299]

The standard deviation of a particular WISC-III subtest is 3, and its reliability coefficient is .84.
  What is the standard error of measurement of the subtest?
 
  A) 1.2 B) 2.5 C) 3.0 D) 2.0

Question 2

An item response curve is a plot of the
 
  A) proportion of examinees who get an item right against the proportion who get it wrong.
  B) proportion of examinees who get an item right against an external or internal criterion.
  C) point-biserial correlations between item and total test scores.
  D) frequency distribution of examinees at each total test score range who get the item right.

[cici]

Answer to Question 1

A

Answer to Question 2

B