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A student received the following grades last semester. Find the student's semester grade point average (using...


A student received the following grades last semester. Find the student's semester grade point average (using the weighted mean). 

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Answer #1

Given is a table on a student receiving grades last semester. Here we need to find the student's semester grade point average (SGPA) using the weighted mean.

Weighted Mean

The weighted mean is nothing different than a mean here the corresponding xi's are attached with weights wi and the weighted mean is given by,

Coming back to our problem,

Here Credits are the weights and Grade/Points are the observations.

The table of calculation is provided below.

Course Credits(wi) Points(xi) xi*wi
Statistics 4 4 16
Physics 5 4 20
Sociology 3 3 9
Literature 2 3 6
Tennis 1 1 1
Total 15 15 52

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