Mrs. Jones wanted to compare her students' math scores on two tests, each of which had 40 items. She found that for Test A, the mean was 20 and the standard deviation was 4, and for Test B, the mean was also 20, but the standard deviation was 6. Which of the following statements is true?
a) The distribution of scores for Test B is positively skewed.
b) The scores for both tests are normally distributed.
c) There is more variation in the distribution of the scores for Test B than in Test A.
d) The standard error is the same for both tests because they both tests have 40 items.
c
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