Determine the quartile or interquartile range as specified.
-The normal annual precipitation (in inches)is given below for 21 different U.S. cities. Find the third quartile, $\mathrm { Q } _ { 3 } .$
$\begin{array} { l l l l l l l } 19.1 & 34.2 & 10.2 & 37.6 & 22.4 & 9.1 & 12.6 \end{array}$
$\begin{array} { l l l l l l l } 32.6 & 20.6 & 36.9 & 30.0 & 39.7 & 17.3 & 24.5 \end{array}$
$\begin{array} { l l l l l l l } 32.2 & 13.6 & 28.7 & 15.0 & 22.3 & 26.9 & 11.7 \end{array}$
A)$24.5 \mathrm { in }$.
B) $32.2 \mathrm { in }$.
C) $32.40 \mathrm { in }$.
D) $31.650 \mathrm { in }$.

Question

Determine the quartile or interquartile range as specified.
-The normal annual precipitation (in inches)is given below for 21 different U.S. cities. Find the third quartile, $\mathrm { Q } _ { 3 } .$ 
$\begin{array} { l l l l l l l } 19.1 & 34.2 & 10.2 & 37.6 & 22.4 & 9.1 & 12.6 \end{array}$
$\begin{array} { l l l l l l l } 32.6 & 20.6 & 36.9 & 30.0 & 39.7 & 17.3 & 24.5 \end{array}$
$\begin{array} { l l l l l l l } 32.2 & 13.6 & 28.7 & 15.0 & 22.3 & 26.9 & 11.7 \end{array}$  
A)$24.5 \mathrm { in }$.
B) $32.2 \mathrm { in }$.
C) $32.40 \mathrm { in }$.
D) $31.650 \mathrm { in }$.

Quizplus · Accepted Answer

To find the third quartile $Q_3$, first arrange the data in ascending order. The third quartile is the median of the upper half of the data. For 21 data points, $Q_3$ is the 16th value, which is 32.2 inches.

Determine the Quartile or Interquartile Range as Specified Q3.\mathrm { Q } _ { 3 } .Q3​.

Determine the Quartile or Interquartile Range as Specified $\mathrm { Q } _ { 3 } .$