# Proportions, Ratios & Averages Chapter Exam

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#### Question 1 1. What is the name for a frequency table that uses pictures or graphics to express data?

#### Question 2 2. Which of these is the easiest to find on a frequency table?

#### Question 3 3. Multiplying the numbers by how often they occur on the table, adding the results, and dividing by the number of points in the data set helps you find which of the following?

#### Question 4 4. Which of the following describes the best approach to finding the median of an even set of numbers?

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Question 5
5.
The following data set represents the minimum wage for 1990-2000. Calculate the median.

8.25, 9.8, 7.25, 7.25, 7.25, 8.75, 8.44, 9.5, 9.6, 9.5

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Question 6
6.
The following data set represents the average annual temperatures for 10 European countries in 2016 (Celsius). Calculate the range.

1.75, 9.8, 7.55, 10.55, 5.8, 9.45, 19.2, 18.45, 16.2, 5.8

#### Question 7 7. Solve for x: 7/x = 28/16

#### Question 8 8. If it takes a team of three painters to paint a 7-room house in a day, how many painters are required to paint a 14-room house in a day?

#### Question 9 9. One box of cereal costs $3. How many boxes can you buy with $15?

#### Question 10 10. A particular pancake recipe calls for 3 cups of flour to 1 cup of milk. Keeping things in proportion, what is the ratio of flour to milk if you double this recipe?

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Question 11
11.
Write a ratio for the number of red balls to blue balls.

Red balls = 10

Blue balls = 8

Green balls = 6

#### Question 12 12. Which of the following ratios is not proportional to 2:3?

#### Question 13 13. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the mode number of medals won during these Olympic Games.

#### Question 14 14. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the median number of medals won during these Olympic Games.

#### Question 15 15. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. If there is an outlier, identify it from the number of medals won during these Olympic Games.

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#### Question 16 16. 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.

#### Question 17 17. In a History course, a student's grade is composed of papers (40%), tests (40%) and a final exam (20%). The student has earned a 90 value on all papers and 80 value on all tests. What is the minimum score the student needs to earn on the final exam to achieve an overall grade of a B+ (87.0 before rounding)?

#### Question 18 18. The Entertainment package on DirecTV currently costs $57.99/month with promotional discounts of $28/month for the first year and $10/month for the second year when signing a two-year contract. The America's Top 120 package on Dish Network costs slightly less at $54.99/month but only has a promotional discount of $25/month for the first year with no discount in the second year when signing a two-year contract. Calculate which service has a lower average monthly price over the two-year period and the difference in the average monthly price between the two packages.

#### Question 19 19. A burrito artist can make 14 burritos in 5 minutes. How many burritos can she make in one hour?

#### Question 20 20. A class with 28 students has 13 boys. What is the ratio of girls to boys?

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#### Question 21 21. At meetings of the Rough Wood Handlers Organization, every member suffers from 7 splinters. How many splinters will there be when 11 members attend?

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Question 22
22.
Find the average of the following numbers.

8, 5, 10, 12, 20

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Question 23
23.
Which number occurs more often than the others?

1, 2, 3, 3, 3, 4, 5, 5, 5, 5, 7, 9, 10, 10

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Question 24
24.
Find the average of the following numbers.

5, 5, 8, 9

#### Question 25 25. Starting at one end of the data on a frequency chart and counting entries until you reach the middle one is the way of finding which of the following?

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#### Question 26 26. The value that occurs the most frequently in a data set is known as the _____.

#### Question 27 27. A painting costs $225. If the sale price is $191.25, what is the percent discount?

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Question 28
28.
Write a ratio for the number of students who received an A to the number of students who received an F.

A Students = 3

B Students = 8

C Students = 2

D Students = 1

F Students = 2

#### Question 29 29. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the mean number of medals won during these Olympic Games. (Round it to the nearest whole number.)

#### Question 30 30. Below is a chart showing the number of goals a hockey team scored in a game and how many times each value occurred over a full 82 game season. Calculate the average number of goals/game that the team scored.

#### Proportions, Ratios & Averages Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!