1. Which statement best describes the interquartile range of this set of weights?


{120 lb, 115 lb, 135 lb, 105 lb, 80 lb, 160 lb}


A. the difference between the first and sixth elements of the set as it is written above

B. the difference between the second and fifth elements of the set as it is written above

C. the difference between the first and sixth elements of the set after it has been ordered from least to greatest

D. the difference between the second and fifth elements of the set after it has been ordered from least to greatest


2. The median age of the science teachers at Mike’s school is the same as the median age of the math teachers, but the ages of the math teachers show greater variability. Which statement most likely describes the data sets?


A. The difference in ages between the oldest and youngest math teachers is greater than the difference in ages between the oldest and youngest science teachers.

B. There are more math teachers than science teachers at Mike’s school.

C. The average age of the math teachers at Mike’s school is greater than the average age of the science teachers.

D. The oldest teacher in Mike’s school is a mathematics teacher.