1. Explain the statistical meaning of the following scores: percentile, z score, IQ, NCE, age equivalent, and grade equivalent. 2. Explain the concept of measurement error. 3. What does a reliability...

1. Explain the statistical meaning of the following scores: percentile, z score, IQ, NCE, age equivalent, and grade equivalent.

2. Explain the concept of measurement error.

3. What does a reliability coefficient of .75 tell you about true-score variability and error variability?