In their October 2003 issue, Consumer Reports evaluated the price and
Performance of 23 models of cordless phones. Computer output gives the summary
Statistics for the prices ($) shown in the table. The IQR for these data is $$\begin{array} { | c | c | c | c | c | c | c | }
\hline \text { Min } & \text { Q1 } & \text { Median } & \text { Q3 } & \text { Max } & \text { Mean } & \text { SD } \
\hline 15 & 30 & 50 & 110 & 200 & 71.75 & 52.08 \
\hline
\end{array}$$
A) $ 80
B) $ 185
C) $ 55
D) $ 90
E) $52.08

Question

In their October 2003 issue, Consumer Reports evaluated the price and
Performance of 23 models of cordless phones. Computer output gives the summary
Statistics for the prices ($) shown in the table. The IQR for these data is $$\begin{array} { | c | c | c | c | c | c | c | } 
\hline \text { Min } & \text { Q1 } & \text { Median } & \text { Q3 } & \text { Max } & \text { Mean } & \text { SD } \
\hline 15 & 30 & 50 & 110 & 200 & 71.75 & 52.08 \
\hline
\end{array}$$
A) $ 80
B) $ 185
C) $ 55
D) $ 90
E) $52.08

Quizplus · Accepted Answer

The IQR is the difference between Q3 and Q1. So, IQR = 110 - 30 = 80.

In Their October 2003 Issue, Consumer Reports Evaluated the Price