Wide Range Achievement Test Wide Range Achievement Standardization and Norming 2

Question 1

Which type of reliability measures consistency of WRAT scores across two administrations separated by time?

Accepted Answer

Test-retest reliability

Answer

Test-retest reliability assesses the stability of scores when the same test is administered twice to the same individuals.

Question 2

What statistical coefficient is most commonly used to report WRAT internal consistency reliability?

Accepted Answer

Coefficient alpha (Cronbach's alpha)

Answer

Coefficient alpha (Cronbach's alpha) is used to measure internal consistency, showing how well WRAT items within a subtest correlate.

Question 3

Grade equivalent scores on the WRAT indicate the grade level at which the average student earns what?

Accepted Answer

The same raw score as the individual being tested

Answer

A grade equivalent shows the grade level at which the average student in the normative sample earned the same raw score.

Question 4

What is the purpose of calculating a confidence interval around a WRAT standard score?

Accepted Answer

To express the range within which the true score likely falls

Answer

A confidence interval expresses the range of scores within which an individual's true score is likely to fall, accounting for measurement error.

Question 5

The standard error of measurement (SEM) on the WRAT is used to calculate what?

Accepted Answer

Confidence intervals around observed scores

Answer

The SEM is used to construct confidence intervals, indicating the probable range of error in an observed WRAT score.

Wide Range Achievement Test Practice Test