A group of middle school boys have a mean height of 167 cm and vary from 164 cm to 169 cm. A group of high school boys have a mean height of 180 cm and vary from 175 cm to 183 cm. Which statement BEST compares the two groups of boys?
Responses
A On average, the middle school boys are taller.
B The middle school boys vary in height more than the high school boys.
C Half of the high school boys are between 181 cm and 183 cm in height.
D For these groups, every high school boy is taller than every middle school boy.
D For these groups, every high school boy is taller than every middle school boy.
double check your answer
A On average, the middle school boys are shorter than the high school boys.
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The mean score for a math test taken by Class A is 84, with the scores ranging from 78 to 94. The mean score for the same math test taken by Class B is 76, with the scores ranging from 68 to 88. Which BEST compares the scores of the two classes?
Responses
A The scores of Class A vary less than the scores of Class B.
The scores of Class A vary less than the scores of Class B.
B The scores of Class B vary less than the scores of Class A..
C The highest score for the test was in Class B..
D On average, the scores of Class A are lower than Class B.