1. For generalizability theory, what statistical technique is central to estimating reliability?
   1. Analysis of Covariance
   2. Analysis of variance
   3. Factor analysis
   4. Pearsons product moment correlation
2. Which of the following statements is most true about the comparison between classic (true-score) approaches to estimating reliability and generalizability theory approaches?
   1. The random-parallel test assumptions are more difficult to satisfy.
   2. The random-parallel test assumptions are more easily satisfy.
   3. Generalizability theory is less flexible than the true-score approach.
   4. Generalizability theory cannot estimate the reliability for absolute decisions.
3. A portion of a commercially available scholastic achievement test is composed of short writing samples. Each of these items is scored on a scale from 1 to 10 based on the correctness of grammar and the quality of expression. Which method of estimating the reliability may be used with the data from this portion of the test?
   1. Cronbachs Alpha
   2. KR-20
   3. KR-21
   4. All of the above