Test 1 Review
Which is relatively better: a score of 7373 on a psychology test or a score of 4242 on an economics test? Scores on the psychology test have a mean of 8888 and a standard deviation of 99. Scores on the economics test have a mean of 6565 and a standard deviation of 88.
A. The economicseconomics test score is relatively better because its z score is greater than the z score for the psychologypsychology test score. B. The psychologypsychology test score is relatively better because its z score is greater than the z score for the economicseconomics test score. C. The psychologypsychology test score is relatively better because its z score is less than the z score for the economicseconomics test score. D. The economicseconomics test score is relatively better because its z score is less than the z score for the psychologypsychology test score.
If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus−2.00, minus−1.00, 0, 1.00, 2.00? Why?
A. The z score of 1.00 is most preferable because it is 1.00 standard deviation above the mean and would correspond to an above average test score. B. The z score of minus−2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. C. The z score of 0 is most preferable because it corresponds to a test score equal to the mean. D. The z score of minus−1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average test score. E. The z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores.
In an editorial, the Poughkeepsie Journal printed this statement: "The median priceminus−the price exactly in between the highest and lowestminus−..." Does this statement correctly describe the median? Why or why not?
A.No. It describes the midrange, not the median. B.Yes. It correctly describes the median. C.No. It describes the mode, not the median. D.No. It describes the mean, not the median.
