The estimated standard error of the mean may be calculated on the basis of the information contained ...

The estimated standard error of the mean may be calculated on the basis of the information contained in a single random sample.
 
  Indicate whether the statement is true or false

Question 2

When graphing the distribution of differences, the abscissa is used to
  represent
 
  a. a sample mean
   b. the difference between the mean of the individual raw scores and the sample
   mean
   c. the difference between two sample means
   d. the frequency of occurrence

Question 3

A given test may be reliable, and yet still not be valid.
 
  Indicate whether the statement is true or false

Question 4

Each single data point on a scatter plot represents a pair of scores.
 
  Indicate whether the statement is true or false