Suppose that on the SAT (Scholastic Aptitude Test), some test-takers do better than others because they make more lucky than unlucky guesses on questions that they cannot solve. This constitutes __________ measurement error, which lowers the SAT's __________.
A) random; measurement level
B) random; reliability and validity
C) systematic; validity
D) systematic; reliability and validity

Question

Quizplus · Accepted Answer

Random measurement error is caused by factors that are not consistent across test-takers, such as luck in guessing. This can lower the reliability and validity of a test, as it can make it difficult to compare scores between test-takers and to determine whether the test is actually measuring what it is supposed to measure.

Suppose That on the SAT (Scholastic Aptitude Test), Some Test-Takers