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

question 13

Essay

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?

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Definitions:

OPEC Countries

Member countries of the Organization of the Petroleum Exporting Countries, an intergovernmental organization that coordinates petroleum policies among its members to secure fair and stable oil prices.

Aggregate Supply Curve

A graphical representation that shows the relationship between the overall price level in an economy and the total output produced by firms.

Potential Output

The maximum amount of goods and services an economy can produce when it is most efficiently utilizing all of its resources.

Skilled Workers

Employees who have specialized training, expertise, knowledge, and abilities in their fields of work.