Question 1020308: 2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?
a. The time (in years) it takes a sample of students to graduate college
b. The blood type (e.g., Type A, B, AB, O) of a group of participants
c. The rankings of college undergraduate academic programs
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! a. Either the median or the mean. The median has the advantage of being less subject to extreme values, but the mean has the advantage of pointing out those extreme values. Still, the median would be more useful, as it would describe upper and lower halves.
b. Blood type: Mode. Mean makes no sense, nor does median. Want to know the numbers for each type. Even that is limited in value.
c. Rankings: Mode for the same reason. Want to know numbers for each. The mean has no useful value, and the median might be useful to show where half are ranked above/below, but neither is as good as the mode.
|
|
|
