# SBA Math - Grade 7: Statistics Chapter Exam

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#### Question 1 1. 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.

#### Question 2 2. If all other statistical procedures fail, the best predictor of a score will be the _____.

#### Question 3 3. Which of the following terms best describes the distribution in the chart below?

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Question 4
4.
Find the range for one standard deviation in the following data set:

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

#### Question 5 5. 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.

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#### Question 6 6. When a data set has two different modes, it is known as what type of distribution?

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Question 7
7.
Find the range for one standard deviation in the following data set:

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

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Question 8
8.
Find the maximum in the data set:

27, 26, 33, 45, 38, 38, 58, 54, 19, 22, 31

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Question 9
9.
Find the average of the following numbers.

5, 5, 8, 9

#### Question 10 10. What is the largest mathematical value in a data set?

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#### Question 11 11. 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 12 12. What is a system of ordering where each mathematical value is given a certain position in a sequence of numbers, where no positions are equal?

#### Question 13 13. Which of the following is least likely to be reported due to it being the one most likely to change by the introduction of additional scores?

#### Question 14 14. What is a graphical representation of the distribution of data?

#### Question 15 15. Brown school has decided to review their ratio of girls to boys in the Second grade class. They decided to count the number of boys in Second grade. This is an example of what type of data?

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#### Question 16 16. Which of these will become a weighted average?

#### Question 17 17. What do we call a value that is much smaller or larger than the other values in a data set?

#### Question 18 18. Which of the following statements is NOT quantitative data?

#### Question 19 19. When a data set has a single mode, it is known to have what type of distribution?

#### Question 20 20. Which of the following would NOT be a discrete variable?

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#### Question 21 21. What is a single number that summarizes an entire data set?

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Question 22
22.
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

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Question 23
23.
Find the first quartile for the following data set:

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

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Question 24
24.
Select the word or phrase that best fills in the blank:

If the index is not a _____, round the number up, then count the values in the data set from least to greatest until you reach the index.

#### Question 25 25. What is a measure that indicates what percent of the given population scored at or below the measure?

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#### Question 26 26. 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 27 27. A teacher is writing a report regarding how well his students did on their last math exam. The best student scored 80 out of a possible 100 points, while the worst student failed the test with a 20 out of a possible 100 points. What is the correct way to display the ratio between the best result and the worst result?

#### Question 28 28. Gender is an example of what type of variable?

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Question 29
29.
Find the variance for the following data set:

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

#### Question 30 30. What is the measure of how far the numbers in a data set are away from the mean or the median?

#### SBA Math - Grade 7: 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!