Answer:
should be 15...
Step-by-step explanation:
Answer : option A
To find the range of scores that represents the middle 50 % of the student who took the test , we find inter quartile
Inter quartile range is the middle 50% of the given range of scores.
The difference between the upper quartile and lower quartile is the inter quartile that is middle 50%
From the diagram , we can see that
Upper quartile = 89
lower quartile = 65
So range is 65% to 89%
7.6, 8.2, 8.8, 9.4, 10.0, 10.6, 11.2, 11.8, 12.4
28 because you do 38-10 which equals 28. Hope I helped.
