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 Statistics Pretest

 1 . Find the mean for the set of data: 10, 12, 12, 16, 19. [Hint] 2 . Find the mode for the set of data: 10, 12, 12, 16, 19. [Hint] 3 . Find the median for the set of data: 10, 12, 12, 16, 19. [Hint] 4 . Find the range for the set of data: 10, 12, 12, 16, 19. [Hint] 5 . Find the standard deviation for the set of data: 10, 12, 12, 16, 19. [Hint] 6 . Find the midrange for the set of data: 10, 12, 12, 16, 19. [Hint] 7 . If a score is in the 80th percentile, what does this mean? [Hint] 8 . Which correlation coefficient is the closest to perfect correlation? [Hint] 9 . If a professor's scores on an exam are normally distributed with a mean score of 72 and a standard deviation of 5, find the percentage of people whose scores were between 67 and 77. [Hint] 10 . A set of data items are normally distributed with a mean of 100 and a standard deviation of 10. Convert the data item, 125, to a z-score. [Hint] Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.

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