The total blood cholesterol level was measured for each of 21 adults. Here are the 21 measurements (in mg/dL). 130, 143, 158, 162, 165, 165, 177, 178, 185, 185, 186, 188, 193, 195, 199, 208, 209, 213, 222, 229, 244 Send data to calculator Frequency 10 8-+ 6+ 4 4 4- 2 2- 2 125 150 175 200 225 250 Cholesterol level (in mg/dL)O Mean (a) Which measures of central tendency do O Median not exist for this data set? Choose all that Mode apply. ONone of these measures (b) Suppose that the measurement 130 (the O Mean smallest measurement in the data set) were O Median replaced by 48. Which measures of central tendency would be affected by the change? O Mode Choose all that apply. None of these measures (c) Suppose that, starting with the original Mean data set, the largest measurement were O Median removed. Which measures of central tendency would be changed from those of O Mode the original data set? Choose all that apply. None of these measures (d) Which of the following best describes the O Negatively skewed distribution of the original data? Choose only OPositively skewed one. O Roughly symmetrical