David G.

asked • 08/16/19

Question about adjusting exam scores on a kind of proportional scale

Let's imagine we have ten student's scores as %


87

76

91

47

68

74

79

94

88

59


The minimum passing score is set at 70%.

The school decides to throw out the 47% grade as a hard fail.

The next lowest grade, 59 is to be adjusted to 70. An increase of 11

The school then wants to adjust the other students' scores


For example the 91% grade.

I would subtract 91 from 100 giving 9, and that gives me my adjustable range, then inside that range I want to apply the same proportional increase that the failing student got when we increased his score from 59 to 70


My math is letting me down here. I solved this problem many years ago but have since lost the excel sheet i put it in, and for the life of me I can't seem to rediscover the solution. Can anyone help with the math?


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Mark M.

tutor
Is the school adjusting the 91% up to 100%?
Report

08/16/19

8850b6cd e12c 4532 90c8 8137a505b3c4

Mark M.

tutor
Why not? The information is necessary to determine the scaling.
Report

08/16/19

1 Expert Answer

By:
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Tim C. answered • 08/16/19

Knowledgeable and Experienced Specialist in GED Math

8850b6cd e12c 4532 90c8 8137a505b3c4

Mark M.

tutor
Why did you choose to calculate on points given rather than on points earned, i.e., 11 / 59 = 18.6%?
Report

08/16/19

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