T-scores for student X on an achievement test battery standardized on the same population are spelling 35, math 62, social studies 50, and English grammar 52. Each test has a SEM of 2; the tests are not intercorrelated. We conclude that
A) X is strongest in spelling.
B) X is strongest in math.
C) there are no substantial differences in X's achievements in these four areas.
D) it is not possible to compare X's performance on these subtests.

Question

Quizplus · Accepted Answer

X is strongest in math, as indicated by the highest T-score of 62 among the subjects listed. T-scores are standardized scores with a mean of 50 and a standard deviation of 10; thus, a score of 62 in math is significantly above the mean, indicating stronger performance in this area compared to the others.

T-Scores for Student X on an Achievement Test Battery Standardized