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Measures of Dispersion Chapter Exam

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!

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Question 1 1. You gathered data at a clinic and entered your results into the frequency table shown below. A research journal wants to know how many people at the clinic have either depression or anxiety. Which of the following would you report to the journal?

Question 2 2. Which of the following is a histogram also known by?

Question 3 3. You gathered data at a clinic and entered your results into the frequency table shown below. You are going to find percentages for each symptom. Which of the following would you use as your total number of scores collected?

Question 4 4. Which of the following best describes a frequency distribution?

Question 5 5. You gathered data at a clinic and entered your results into the frequency table shown below. Which of the following is the percentage of patients you found to have schizophrenia (round to the nearest tenth if necessary)?

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Question 6 6. During the first four Summer Olympic games attended by the United States, these medal counts were awarded. Calculate the range number of medals won during these Olympic Games.

Question 7 7. 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 8 8. 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 9 9. 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 10 10. 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 11 11.

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

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

Question 12 12.

Find the standard deviation for the following data set:

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

Question 13 13.

Find the variance for the following data set:

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

Question 14 14.

Find the standard deviation for the following data set:

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

Question 15 15.

Find the variance for the following data set:

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

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Question 16 16. Sample A has a mean of 45 and a standard deviation of 4. Sample B has a mean of 200 and standard deviation of 20. Which statement is true? (CV stands for coefficient of variation)

Question 17 17. Which statement is the definition of the coefficient of variation?

Question 18 18. Which statement is false?

Question 19 19. Which scenario will give you a coefficient of variation of 30%?

Question 20 20. What is the coefficient of variation of a sample that has a mean of 20 and standard deviation of 2?

Measures of Dispersion 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!

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