Class Average Percentage

On the semester final, Joe scored 85, Jill scored 89, and Bill scored a 99.What was the average score for these students? _________

• 91
• 273

Find the class grade for a student with grades: Test 89%, Quiz 92, Homework 86%, and Classwork 95%.
Tests are 60% of the grade, Quiz 15%, Homework is 10% of the grade, and Classwork is 15% of the grade.

• 89.25
• 91.55
• 90.05
• i don't know

Why would you use a weighted average instead of a traditional average calculation?

• Because you have a lot of numbers
• Because the value you are trying to calculate is made up of categories which each have different weights.

A student's grade in a Psychology course is comprised of tests (40%), quizzes (20%), papers (20%), and a final project (20%). His scores for each of the categories are 85 (tests), 100 (quizzes), 92 (papers) and 84 (final project). Calculate his overall grade.

• 90.25
• 88.2
• 89.2
• 86.7

an average resulting from the multiplication of each component by a factor reflecting its importance.

• Ervin, Brandon, and Gage need really loud alarm clocks. 
• weighted average 
• letterbox
• pillarbox

A history professor weights his grades as follows:

Tests 50%

Attendance 25%

Final exam 25%

If Susy earned an average of 91 on her tests, 80 on her attendance and 85 on her final exam, what will her final grade in the class be?

• 85.33

• 85

• 86.75

• 83.75

If I have a 85 average for Daily (20%) and a 75% average for Minor (30%), what do I need for a Major average (50%) to have a 83 average overall?

• 81
• 83
• 87
• 89

Test Average = [65, 75, 82, 88, 95]
Final Exam Grade = 88
 Hk = [95, 90, 85, 90, 95, 100, 95, 94]
Class Part = [95, 90, 100, 95, 95, 90, 100]  
Calculate the weighted average on System 1

• 87.15
• 87.65
• 88.15
• 86.15

Test Average = [65, 75, 82, 88, 95]
 Hk = [95, 90, 85, 90, 95, 100, 95, 94]
Class Part = [95, 90, 100, 95, 95, 90, 100]

 If you had not taken your final exam yet and needed a 90 in the class to make your parents happy, what would you have to make? Is it possible?   System 1 _____________________

• 99.4
• 101.4
• 90
• 100

Which average has been calculated incorrectly?

• A

• B

• C

• D

• None