A teacher taught two sections of elementary statistics last fall, each with 30 students, one at...
A teacher taught two sections of elementary statistics last fall, each with 30 students, one at 9:00 a.m. and another one at 11:00 a.m. The means and standard deviations for the final exams were 80 and 8 for the 9:00 class, and 50 and 7 for the 11:00 a.m. class. Which group has the highest grade variability? Justify your answer.
Homework Answers
The
class which has maximum coefficient of variance, is having highest
grade variability.
Here class at 11 am has maximum coefficient of variation. Hence this class having highest grade variability.
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