### MS 150 Statistics Test 01 Fall 2003

#### 1 to 4: Matching: Levels of Measurement

____ 1. Names: Elizabeth, Abigail, Alexis, Emily, Hannah, Lauren, Taylor, Madison, Olivia, Samantha A. Interval
____ 2. Ten most popular girl baby names in the United States in 2002 in descending order: Emily, Madison, Hannah, Emma, Alexis, Ashley, Abigail, Sarah, Samantha, Olivia. 1,2 B. Ordinal
____ 3. Year: 1981, 1987, 1999, 2002 C. Nominal
____ 4. The numbers of baby girls born in 2002 given the names shown:
Alexis Comingalongaleen Emily Hannah Madison Olivia
15,411024,26218,55925,54614,481
D. Ratio
2Most unpopular names: Hermine, Charmain, Charla, Glynnis, Merla, Ginette

##### The rest of the questions refer to the following data:

The number of new orange centerline reflectors from the Sokeh's Island junction to the college in Palikir was counted by a three person team. The numbers are the number of markers for each half kilometer.

Number of
centerline reflectors
per half kilometer
84
74
78
61
67
55
54
62
61
83
81
75
70
65
70
76
1. For the number of centerline reflectors per half kilometer:

_________ Determine the sample size n.
2. _________ Calculate the sample mean x.
3. _________ Determine the median.
4. _________ Determine the mode.
5. _________ Determine the minimum.
6. _________ Determine the maximum.
7. _________ Calculate the range.
8. _________ Calculate the sample standard deviation sx.
9. _________ Calculate the sample Coefficient of Variation.
10. _________ Determine the class width. Use 5 bins (classes or intervals)
11. Fill in the following table with the class upper limits in the first column, the frequencies in the second column, and the relative frequencies in the third column
Bins Frequency Relative Frequency f/n
_________ _________ _________
_________ _________ _________
_________ _________ _________
_________ _________ _________
_________ _________ _________
Sums: _________ _________
12. Sketch a histogram of the relative frequency data on the back of the paper.
13. _________ What is the shape of the distribution?