DESCRIPTIVE STATISTICS Mean, median, and mode: Comparisons V Listed below are the numbers of doctor's office visits made by 21 families during the past year. 1, 1, 1, 3, 3, 4, 4, 6, 6, 6, 7, 7, 8, 9, 9, 11, 11, 13, 14, 19, 21 SFil Send data to Excel Frequency 6- 4+ 2- 5 10 15 Number of doctor's office visits 20 25 Mean (a) For these data, which measures of central tendency take more than one value? O Median Choose all that apply. Mode ONone of these measures (b) Suppose that the measurement 21 (the O Mean largest measurement in the data set) were replaced by 31. Which measures of central Median tendency would be affected by the change? O Mode Choose all that apply. ONone of these measures (c) Suppose that, starting with the original Mean data set, the largest measurement were removed, Which measures of central Median tendency would be changed from those of Mode the original data set? Choose all that apply None of these measures (d) Which of the following best describes the ONegatively skewed distribution of the original data? Choose only O Positively skewed one. O Roughly symmetrical