XE 34. Weighted Mean A student of the author earned grades of 63, 91, 88, 84, and 79 on her five regular statistics tests. She earned grades of 86 on the final exam and 90 on her class projects. Her combined homework grade was 70. The five regular tests count for 60% of the final grade, the final exam counts for 10%, the project counts for 15%, and homework counts for 15%. What is her weighted mean grade? What letter grade did she earn (A, B, C, D, or F)? Assume that a mean of 90 or above is an A, a mean of 80 to 89 is a B, and so on.
XE 34. Weighted Mean A student of the author earned grades of 63, 91, 88, 84, and 79 on her five regular statistics tests. She earned grades of 86 on the final exam and 90 on her class projects. Her combined homework grade was 70. The five regular tests count for 60% of the final grade, the final exam counts for 10%, the project counts for 15%, and homework counts for 15%. What is her weighted mean grade? What letter grade did she earn (A, B, C, D, or F)? Assume that a mean of 90 or above is an A, a mean of 80 to 89 is a B, and so on.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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XE 34. Weighted Mean A student of the author earned grades of 63, 91, 88, 84, and 79 on her five
regular statistics tests. She earned grades of 86 on the final exam and 90 on her class projects.
Her combined homework grade was 70. The five regular tests count for 60% of the final grade,
the final exam counts for 10%, the project counts for 15%, and homework counts for 15%. What
is her weighted mean grade? What letter grade did she earn (A, B, C, D, or F)? Assume that a
3
91
4
88
5
84
79
7 Combined test grade
8
9
mean of 90 or above is an A, a mean of 80 to 89 is a B, and so on.
10 Topics
weight
Scores
11 Test
60%
12 Final
86
10%
13 Class projects
14 homework
90
15%
70
15%
15
16
Weighted mean
17
A">=90
B= 80--89
C= 70-79 D60-69
F less than 60
18
Letter grade
19
20
21
22
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