Here are the average mathematics achievement scores for ninth graders in 32 counties. $$\begin{array} { l }
607~585~574~572~569~565~564~558 \
542~534~531~528~525~524~519~516 \
498~480~478~475~471~465~458~446 \
419~410~409~389~380~382~355~324 \
\end{array}$$
A)324,419,419,542,607
B)324,432.5,507,550,607
C)324,446,507,558,607
D)324,419,516,542,607
E)324,419,507,542,607

Question

Here are the average mathematics achievement scores for ninth graders in 32 counties. $$\begin{array} { l } 
607~585~574~572~569~565~564~558 \
542~534~531~528~525~524~519~516 \
498~480~478~475~471~465~458~446 \
419~410~409~389~380~382~355~324 \
\end{array}$$
A)324,419,419,542,607
B)324,432.5,507,550,607
C)324,446,507,558,607
D)324,419,516,542,607
E)324,419,507,542,607

Quizplus · Accepted Answer

The correct answer is B) 324, 432.5, 507, 550, 607. This is because the numbers represent the minimum, first quartile (Q1), median, third quartile (Q3), and maximum of the dataset, respectively. The minimum is 324, and the maximum is 607. The median (middle value) of the sorted dataset is 507. The first quartile (Q1) is the median of the first half of the data, which is 432.5, and the third quartile (Q3) is the median of the second half of the data, which is 550.

Here Are the Average Mathematics Achievement Scores for Ninth Graders