Respuesta :
Student's mean score of the class is 80.6.
Mean:
Mean or the average of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.
Given,
A student receives test scores of 62, 83, and 91. the student's term project score is 88 and her homework score is 76. each test is worth 20% of the final grade, the term project is 25% of the final grade, and the homework grade is 15% of the final grade.
Here we need to find the student's mean score in the class.
First, we have to convert the percentage into decimal,
Then
=> 20% = 0.20
=> 25% = 0.25
=> 15% = 0.15
Then we have to find the scores from it,
Test A is 0.20 of the total and scores 62.
Test B is 0.20 of the total and scores 83.
Test C is 0.20 of the total and scores 91.
Project F is 0.25 of the total and scores 88.
Work H is 0.15 of the total and scores 76.
Multiply across:
=> A = (0.2 * 62) = 12.4
=> B = (0.2 * 83) = 16.6
=> C = (0.2 * 91) = 18.2
=> F = (0.25 * 88) = 22
=> H = (0.15 * 76) = 11.4
Now we have to add all these values to find the mean,
=> A + B + C + F + H
=> 12.4 + 16.6 + 18.2 + 22 + 11.4
=> 80.6
Therefore, the mean of that student is 80.6
To know more about Mean here.
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