SLIDES - Weighted Averages

Open Ended

What around your mean to the nearest zes of shoes sold?

The following table represents the sizes of winter boots that were sold last week.

Multiple Choice

A survey was taken to find out how many times per year children saw a doctor. The results are shown in the table. What was the mean number of doctor visits per year?

• 3

• 3.25

• 3.5

• 3.75

Multiple Choice

A college course has grades weighted as: Final Exam 40%, Midterm 30%, Homework 30%. A student scores an 85 on the Final, a 75 on the Midterm, and a 95 on Homework. What is their course average?

• 80
• 90
• 85
• 70

Multiple Choice

A company's performance is rated using the following: Customer Service 30%, Product Quality 50%, Delivery 20%. They score 85 on Service, 90 on Product

Quality, and, 70 on Delivery. What is the weighted rating?

• 84.5
• 75.3
• 90.5
• 80.0

Multiple Choice

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

Open Ended

What is one real-world situation where you might use weighted averages or indices to make a decision?

Multiple Choice

A weighted average is different from an average because the items are...

• weighted the same

• weighted depending on importance

• weighted more heavily

• weighted less

Multiple Choice

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

Multiple Choice

A student's final grade is calculated based on tests, projects, and homework. Tests are weighted 50%, projects are weighted 30%, and homework is weighted 20%. If a student scores 80% on tests, 90% on projects, and 95% on homework, what is the student's weighted average grade?

• 92

• 88

• 78

• 86

Multiple Choice

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