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The graph on the left represents the number of family members per family in Town X, while the graph on the right represents the number of family members per family in Town Y. The median family size for Town X is equal to the median family size for Town Y. The horizontal and vertical dimensions of the boxes above are
identical and correspond to the same measurements. Which of the following must be true?
I. The range of family sizes measured as the number of family members is larger in Town X than in Town Y.
II. Families in Town Y are more likely to have sizes within 1 family member of the mean than are families in Town X.
III. The data for Town X has a larger standard deviation than the data for Town Y.
A. I only.
B. II only.
C. III only.
D. II and III only.
E. I, II and III.
OA D
Source: Manhattan Prep
identical and correspond to the same measurements. Which of the following must be true?
I. The range of family sizes measured as the number of family members is larger in Town X than in Town Y.
II. Families in Town Y are more likely to have sizes within 1 family member of the mean than are families in Town X.
III. The data for Town X has a larger standard deviation than the data for Town Y.
A. I only.
B. II only.
C. III only.
D. II and III only.
E. I, II and III.
OA D
Source: Manhattan Prep
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