4. (5 pts) The quiz scores of 15 students enrolled in a public health class were recorded in ascending order as follows: 4, 7, 7, 9, 10, 11, 13, 15, 15,

15, 17, 17, 19, 19, 20 After calculating the mean, median, and mode, an error is discovered: one of the scores of 15 is really a 17. The measures of central tendency that will change are: A. the mean only B. the mode only C. the median only D. the mean and mode E. all three measures 5. (5 pts) In measuring the center of the data from a skewed distribution, the median would be preferred over the mean for most purposes because: A. the median is the most frequent number B. the mean may be too heavily influenced by the larger observations C. the median is less than the mean and smaller numbers are always appropriate for the center D. the mean measures the spread in the data E. the median measures the arithmetic average of the data excluding outliers