Stattistics
posted by lisa .
In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject.
Mean SD
Math 67 9.58
English 78 12.45
One studentâ€™s Math score was 70 and the same individualâ€™s English score was 84. On which exam did the student do better?

Compare in terms of a standard score (Z).
Z = (scoremean)/SD
Which Z score is greater?