# se31 8:00 t01 3.4 12 September 2014 Name:

BFI
16
17
18
25
26
26
28
28
31
33
35
36
36
40
41

The data is body fat percentages for female students.

1. ____________________ What is the level of measurement?
2. n= __________ Calculate the sample size n.
3. Q0 = __________ Calculate the minimum (zeroth quartile).
4. Q1 = __________ Calculate the first quartile.
5. Q2 = __________ Calculate the median (second quartile).
6. Q3 = __________ Calculate the third quartile.
7. Q4 = __________ Calculate the maximum (fourth quartile).
8. IQR = __________ Calculate the Inter-Quartile Range.
9. Make a sketch of the box plot for this time data.
10. x = __________ Calculate the sample mean x.
11. mode = __________ Calculate the mode.
12. sx = __________ Calculate the sample standard deviation sx.
13. CV = __________ Calculate the sample coefficient of variation CV.
14. z = __________ Calculate the z-score for a BFI of 16.
15. z = __________ Calculate the z-score for a BFI of 41.
16. range = __________ Calculate the range.
17. width = __________ If the time data is divided into five classes, what is the width of a single class?
18. Determine the frequency and calculate the relative frequency for the data. Record your results in the table provided.
Class upper limitsFrequency FRel. Freq.
Sums:
19. Sketch a frequency histogram for the data, labeling your horizontal axis and vertical axis as appropriate.
20. What is the shape of the histogram?

Shoes

The table on the right has images of running shoes. The shoes in the table on the right can be seen in larger images above.

1. For the images in the table:
1. __________ What is the level of measurement?
2. __________ What is the sample size n?
3. __________ What is the most appropriate statistic to use as a measure of the middle?
4. What is the value of that most appropriate measure of the middle?