# MEGA Middle School Math: Statistics Chapter Exam

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#### Question 1 1. What do we call a value that is much smaller or larger than the other values in a data set?

#### Question 2 2. Which of the following describes the best approach to finding the median of an even set of numbers?

#### Question 3 3. 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 4 4. What is the largest mathematical value in a data set?

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Question 5
5.
For the following data set, select the best method for summarizing the data.

3, 3, 4, 5, 2, 9, 5, 2, 3, 4

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Question 6
6.
Find the range for one standard deviation in the following data set:

101, 106, 125, 142, 78, and 109

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Question 7
7.
Find the interquartile range for the following data set:

7, 9, 13, 4, 18, 3, 9, 10, 15, 8, 2, 6, 9

#### Question 8 8. What is a measure that indicates what percent of the given population scored at or below the measure?

#### Question 9 9. When a data set has two different modes, it is known as what type of distribution?

#### Question 10 10. When a data set has a single mode, it is known to have what type of distribution?

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#### Question 11 11. What is the relationship between two mathematical values, where each value can be less than, greater than, or equal to the second value?

#### Question 12 12. A graph that peaks to the left or the right of the center is known as _____.

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Question 13
13.
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

#### Question 14 14. 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.

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Question 15
15.
Find the variance for the following data set:

16, 20, 14, 24, 16, 19, 30, and 8

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#### Question 16 16. If all other statistical procedures fail, the best predictor of a score will be the _____.

#### Question 17 17. 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 18 18. A statistician makes a graph, which includes a shape that's almost mirrored perfectly across a line, but not quite. How should we describe the shape?

#### Question 19 19. If there are two modes, you should _____.

#### Question 20 20. Select the statement that represents discrete quantitative data.

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Question 21
21.
Phyllis is also in Jonathan's psychology class. She knows she scored in the 90th percentile on his psychology test. The professor gives the students the following list of grades (without names):

51, 37, 87, 95, 99, 78, 63, 96, 68, 84, 92

Assuming that there are 11 students in the class, what was Phyllis's test score?

#### Question 22 22. 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.

#### Question 23 23. What is the smallest mathematical value in a data set?

#### Question 24 24. What is a system of ordering in which the mathematical values that are equal are given the mean of the ranking positions?

#### Question 25 25. What is the measure of how far the numbers in a data set are away from the mean or the median?

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Question 26
26.
Find the range for one standard deviation in the following data set:

16, 20, 14, 24, 16, 19, 30, and 8

#### Question 27 27. 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 28 28. 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 29 29. What is a ranking system in which the mathematical values that are equal are given equal rank and the next, lesser value is given the next highest rank?

#### Question 30 30. In any study, variables can be defined as:

#### MEGA Middle School Math: Statistics 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!