Set A is {1, 3, 5, 7, 9}
Set B is {14, 16, 18, 20, 22}
For the sets of numbers above, which of the following is true?
I. The mean of Set B is greater than the mean of Set A.
II. The median of Set B is greater than the median of Set A.
III. The standard deviation of Set B is greater than the standard deviation of Set A. Choices:  A) I only  B) I and II only  C) I and III only  D) II and III only  E) I, II, and III
The mean and median of Set A is 5.   The mean and median of Set B is 18.   Thus statements I and II are both true.   The standard deviation is related to the distance from the mean.   Since the elements of both sets are spaced identically around the mean (+/- 2, +/- 4), the standard deviations of both sets are equal.   The answer is I and II only.
<result>B</result>
Set A is {1, 3, 5, 7, 9}
Set B is {14, 16, 18, 20, 22}
For the sets of numbers above, which of the following is true?
I. The mean of Set B is greater than the mean of Set A.
II. The median of Set B is greater than the median of Set A.
III. The standard deviation of Set B is greater than the standard deviation of Set A.