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:

Phenotypes

The set of observable characteristics or traits of an organism resulting from the interaction of its genotype with the environment.

Normal Distribution

A bell-shaped frequency distribution curve, where most occurrences take place in the middle of the distribution and taper off on either side.

Hardy-Weinberg Principle

A principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

Allele Frequencies

The proportions of different alleles of a particular gene in a given population.