Question

Mr. Robertson was looking at the test grades of two of his students, shown in the table below.



Test 1 Test 2 Test 3 Test 4
Jimmy 83 91 90 88
Brian 78 82 70 70


Which statement below best describes the students' grades?
Jimmy's median test score is less than Brian's median test score by 12 points.
Jimmy's mean test score is greater than Brian's mean test score by 13 points.
Jimmy's mean test score is less than Brian's mean test score by 13 points.
Jimmy's median test score is greater than Brian's median test score by 14 points.

Answer 1

Jimmy -- 83,88,90,91
mean = (83 + 88 + 90 + 91)/4 = 352/4 = 88
median (middle number) = (88 + 90) / 2 = 178/2 = 89

Brian -- 70,70,78,82
mean = (70 + 70 + 78 + 82)/4 = 300/4 = 75
median = (70 + 78)/2 = 148/2 = 74

can you find the answer from here ?

Answer 2

check out the mean scores

Answer 3

Okay

Answer 4

Its B

Answer 5

yep...you got it :)

Answer 6

Thanks for takeing the time to explain

Answer 7

:) :)

Answer 8

no problem...thats what I am here for :)