$$\begin{array}{l}
\text { For the data set below, find the third quartile. }\
\begin{array} { l l l l l l l l l l l }
\hline 72 & 72 & 67 & 68 & 75 & 73 & 73 & 70 & 65 & 79 & 79 \
\hline
\end{array}
\end{array}$$
A) 57.5
B) 75
C) 68
D) 65

Question

$$\begin{array}{l}
\text { For the data set below, find the third quartile. }\
\begin{array} { l l l l l l l l l l l } 
\hline 72 & 72 & 67 & 68 & 75 & 73 & 73 & 70 & 65 & 79 & 79 \
\hline
\end{array}
\end{array}$$
A) 57.5
B) 75
C) 68
D) 65

Quizplus · Accepted Answer

The third quartile (Q3) is the median of the upper half of the data set. First, arrange the data in ascending order: 65, 67, 68, 70, 72, 72, 73, 73, 75, 79, 79. Since there are 11 data points, the middle value (6th) is 72, dividing the data into lower and upper halves. The upper half is 73, 73, 75, 79, 79. The median of this upper half is 75, which is the third quartile (Q3).

A) 575 B) 75 C) 68 D) 65

A) 575
B) 75
C) 68
D) 65