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liubo4ka [24]
3 years ago
15

To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course are weighted by the number of

credits for the course. Suppose a student had these grades: 3.8 in a 5 credit Math course 1.8 in a 3 credit Music course 3.1 in a 5 credit Chemistry course 3.1 in a 5 credit Journalism course What is the student's GPA for that term? Round to two decimal places. Student's GPA =
Mathematics
1 answer:
postnew [5]3 years ago
4 0

Answer:

The student's GPA for that term is 3.07

Step-by-step explanation:

So this is a problem where we need to compute a weighted arithmetic mean.

To compute the weighted arithmetic mean of a set, we need to multiply each value of the set by their respective weight, add them, and then divide by the sum of the weights.

I will write the set in a {V,W} way, where V is the value(the grade) and W is the weight of V.

So your set G will be

G = {{3.8, 5}, {1.8,3}, {3.1,5}, {3.1,5}}.

Multiplying each value by it's respective weigth and then adding, we have:

3.8*5 + 1.8*3 + 3.1*5 + 3.1*5 = 19 + 5.4 + 15.5 + 15.5 = 55.4

The sum of the weigths is 5 + 3 + 5 + 5 = 18

So the student's GPA for that term, rounded to two decimal places, is: 55.4/18 = 3.07

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