**Instructions**: Answer each question, and when required explain your answer. Your explanation must be clear and complete. You may refer to your book, your notes and your homework papers.
- (Be prepared to make other kinds of charts too.)
- Make a double stem and leaf plot
using the two data sets given in Problem 4 on page 512.
- Make a single comparison histogram
using the two data sets given in Problem 4 on page 512.
Choose an appropriate bin length; justify the length you use.

- (Be prepared to discuss the advantages of other kinds
of charts.) A survey of college students found that
67% have an after school job, 45% live off campus,
43% ride a bicycle to class, and 25% have not declared a major.
Which would be the best choice to display this data:
a bar chart, a line graph, a pie chart or a histogram?
Justify your answer as to which is best (and why
each of the others are not).
- Do Problem 4 on page 545.
- Explain how to select a simple random sample of 7 elements
from the whole numbers running from 1 to 100, using the table on page 570.
What sample do you get? Explain in enough detail that I can verify
that your sample is the one you should have gotten.
- Explain how to select a 50% independent sample
from the whole numbers running from 1 to 10, using the table on page 570.
What sample do you get? Explain in enough detail that I can verify
that your sample is the one you should have gotten.
- Do Problem 37 on page 592.
- Consider the data 1, 5, 6, 6, 7, 8, 8, 9, 11, 20.
- Find the mean of this data.
- Find the median of this data.
- Find the mode(s) of this data.
- Is the data skewed left or right?
- Find the range of this data.
- Create and label a box and whisker plot of this data.