Question

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. On average, the middle school boys are taller.

B For these groups, every high school boy is taller than every middle school boy.For these groups, every high school boy is taller than every middle school boy.

C Half of the high school boys are between 181 cm and 183 cm in height.Half of the high school boys are between 181 cm and 183 cm in height.

D The middle school boys vary in height more than the high school boys

Answer 1

B

Reason: middle school heights range 164–169 while high school heights range 175–183. Since 175 > 169, every high school boy is taller than every middle school boy.