Question

I really need help answering these questions! Please help

1. Graph the frequency distribution as a histogram graph. Use StatDisk to draw the graph. Describe the histogram and choose one of the measures of central tendency to interpret this data set.

2. Carry all calculations and the answer to 4 decimal places unless otherwise noted. For example, the number "123.0000" has been carried and reported to 4 decimal places. (Yes, trailing zeros count.)

   The county library staff has recorded the number of days in a calendar year that a random sample of 20 books were overdue. The county librarian is concerned that, on average, books may be overdue for at least a week.

   Days that library books are overdue from a random sample of twenty books:

   2	5	5	6	7	7
   8	8	9	9
   10	10	10	10	11
   12	12	13	15	16

   • Quartile Array & Frequency Distribution Table - PDF Document (42 KB)

1. How many classes will the Frequency Distribution Table have for this data set?
2. What is the Class Width for each class?
3. When drawing the frequency polygon, what is the lower x-intercept?
4. When drawing the frequency polygon, what is the upper x-intercept?
5. What is the mean (arithmetic average) for this data set? (round your answer to 4 decimal places).
6. What is the median for this data set? (report your answer to 4 decimal places)
7. What is the midpoint of the modal class for this data set? (report your answer to 4 decimal places).
8. What is the relative frequency of the modal class for this data set? (report your answer to 4 decimal places)
9. What is the standard deviation for this data set? (round your answer to 4 decimal places)
10. What is the Coefficient Of Variation for this data set? (Note: COV is a % reported to 2 decimal places, like "12.34%" so remember to use the % sign after the numerical answer.)
11. Viewing the graph of the histogram, how would you correctly describe this distribution?
12. Which measure of central tendency should be used to interpret this data set?
13. Refer to your answer in Question # 12. Why is the correct choice for the measure of central tendency in Question # 12 the preferred choice?

Answer 1