Question

The quiz scores for two different groups of math students are given below. Use the mean and standard deviation to determine which group had a higher average, and which group was more consistent.



Group A – 95, 87, 93, 80, 72, 75, 90, 91, 66, 75
Group B – 71, 75, 87, 90, 90, 91, 85, 84, 87, 80

Group A had a higher average; Group B was more consistent
Group B had a higher average; Group B was more consistent
Group B had a higher average; Group A was more consistent

Group A had a higher average; Group A was more consistent

Answer 1

marry me no?

Answer 2

what?

Answer 3

You would need a graphing calculator for this to determine the standard deviation. There is a long formula for it if you don't have a calculator.

Answer 4

aw man okie :(