Question : 11. Your friend puts 11 numbers into a hat without showing : 1201773

 

 

11. Your friend puts 11 numbers into a hat without showing you what those numbers are. He tells you he will give you $10 if you can guess the exact number that he will randomly pick out of the hat. He says that the mean of the numbers is 5, the median is 6, and the mode is 8. What would your best guess be? 
A. 5
B. 6
C. 8
D. Any random number between 1 and 11 (knowing the statistics won’t help)

12. To compare different sections of a psychology class, an instructor looked at the average quiz scores for each section and also at the most frequently occurring score in each section. In other words, the instructor compared the _____ and _____ of both sections. 
A. medians; ranges
B. modes; medians
C. means; modes
D. means; medians

13. You have been asked to look at the following data set: 2, 4, 6, 8, 8, 10, 12, 14. Based on your understanding of central tendency, you recognize which of the following statements as false? 
A. The mean is equal to the median.
B. The mean is equal to the range.
C. The mean is equal to the mode.
D. The median is equal to the mode.

14. For his Statistics test, Will Hunting has to calculate the mean of a data set. To do this, he will need to add up all the scores and divide that result by the 
A. range.
B. standard deviation.
C. number of scores.
D. mode.

15. What is the range associated with the following set of numbers: 1, 1, 1, 1, 3? 
A. 7
B. 3
C. 2
D. 1

16. Which of the following statements is false? 
A. The range is the difference between the highest and lowest scores.
B. The mean is the arithmetic average.
C. The median is one-half of the range.
D. The mode is the most frequent score.

17. Coach Hartley is studying the average running times of the boys on his team, the Falcons, and of those on a team from a rival school, the Larks. He figures out the means and standard deviations for the two teams and finds that the Larks have both a higher mean and a higher standard deviation than the Falcons. What conclusion can he base on that information? 
A. That the Falcons are faster but their running times are more spread out
B. That the Falcons are slower but their running times are closer to the mean
C. That the Larks are faster but their running times are closer to the mean
D. That the Larks are slower but their running times are more spread out

18. What does it mean if the standard deviation of a distribution of quiz grades is 0? 
A. An equal number of people got each grade (A, B, C, D, and F).
B. The distribution is a normal, bell-shaped curve.
C. Everyone in the class got the same grade, or score.
D. Everyone in the class got a different grade.

19. Which of the following is a characteristic of a normal distribution? 
A. The mean and the standard deviation are equal.
B. The standard deviation and the variance are equal.
C. Fifty percent of the sample is within one standard deviation of the mean.
D. The mean, median, and mode are equal.

20. Joe has collected data on the number of hours ten-year-olds spend watching television each week. He tells you that the distribution of scores followed a truly normal curve. Which of the following is not suggested by Joe’s statement? 
A. Fifty percent of the scores fall below the mean.
B. The mean, median, and mode are the same value.
C. Sixty-eight percent of the scores fall within one standard deviation above and below the mean.
D. Ten percent of the scores fall two standard deviations above the mean.

 

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