A survey conducted in a college intro stats class $$\begin{array} { | l | l | l | l | l | l | l | l | }
\hline 10 & 10 & 12 & 14 & 15 & 15 & 15 & 15 \
\hline 17 & 17 & 19 & 20 & 20 & 20 & 20 & 22 \
\hline
\end{array}$$
asked students about the number of credit hours
they were taking that quarter.The number of
credit hours for a random sample of 16 students is
given in the table.
a.Sketch a histogram of these data
b.Find the mean and standard deviation for
the number of credit hours.
c. Find the median and IQR for the number
d. Is it more appropriate to use the mean of credit hours. and standard deviation or the median and IQR to summarize theses data?

Question

A survey conducted in a college intro stats class $$\begin{array} { | l | l | l | l | l | l | l | l | } 
\hline 10 & 10 & 12 & 14 & 15 & 15 & 15 & 15 \
\hline 17 & 17 & 19 & 20 & 20 & 20 & 20 & 22 \
\hline
\end{array}$$ 
asked students about the number of credit hours
they were taking that quarter.The number of
credit hours for a random sample of 16 students is
given in the table.
a.Sketch a histogram of these data 
b.Find the mean and standard deviation for
the number of credit hours. 
c. Find the median and IQR for the number  
d. Is it more appropriate to use the mean of credit hours.  and standard deviation or the median and IQR to summarize theses data?

Quizplus · Accepted Answer

The Answer is a.
$a. b. \bar { x } = 16.3 ext { credit hours; } s = 3.7 ext {credit} c.The median is 16.0 credit hours. \mathrm{IQR}=\mathrm{Q} 3-\mathrm{Q} 1=20-14.5=5.5 credit hours d.It is mand IQR to sore apprummarize opriate to these data, because the median use these data are not unimodal and symmetric.$
b.

\bar { x } = 16.3 ext { credit hours; } s = 3.7 ext {credit}

c.The median is 16.0 credit hours.

\mathrm{IQR}=\mathrm{Q} 3-\mathrm{Q} 1=20-14.5=5.5

credit hours

d.It is mand IQR to sore apprummarize opriate to these data, because the median use these data are not unimodal and symmetric.

A Survey Conducted in a College Intro Stats Class Asked Students About the Number of Credit Hours They Were

A Survey Conducted in a College Intro Stats Class Asked Students About the Number of Credit Hours
They Were