In a final exam of biology course, the mean mark of a group of 150 students was 78 and standard deviation was 8. In chemistry course of the same group, the mean was 73 and standard deviation was 7.6....


In a final exam of biology course, the mean mark of a group of 150 students was 78 and standard

deviation was 8. In chemistry course of the same group, the mean was 73 and standard deviation was

7.6. Then:

a) Which group is more consistent?

b) Suppose a student score 75 in statistics and 71 in calculus, in which exam was his

relative standing better?


Sep 10, 2022
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