Comparing the California test scores to test scores in Massachusetts is appropriate for external validity if
A)Massachusetts also allowed beach walking to be an appropriate P.E. activity.
B)the two income distributions were very similar.
C)the student-to-teacher ratio did not differ by more than five on average.
D)the institutional settings in California and Massachusetts, such as organization in classroom instruction and curriculum, were similar in the two states.

Question

Quizplus · Accepted Answer

For external validity, it is important that the institutional settings in California and Massachusetts are similar, including the organization in classroom instruction and curriculum. This ensures that any differences in test scores can be attributed to the educational system and not other external factors. The other options (A, B, and C) do not directly relate to external validity in comparing test scores between California and Massachusetts.

Comparing the California Test Scores to Test Scores in Massachusetts