Question

12. [0/7.18 Points] DETAILS

Answer 1

Using the weighted mean, your final grade is of 80.58.

What is the weighted mean?

The weighted mean is given by the sum of all elements in a data-set multiplied by it's weight, divided by the sum of the weights.

When the weights are given as proportions, as is the case in this problem, the weighed mean is the sum of each value multiplied by it's proportion.

For this problem, the grades are given as follows:

• 63 with a proportion of 0.17.

• 60 with a weight of 0.205.

• 78 with a weight of 0.205.

• 99 with a weight of 0.42.

Hence the final grade is given by:

0.17 x 63 + 0.205 x 60 + 0.205 x 78 + 0.42 x 99 = 80.58.

More can be learned about the weighted mean at brainly.com/question/24398353

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