1. Use the given frequency distribution to create the following graphs, by hand.
a. Create a relative frequency polygon for the data.
|
Class
|
Frequency
|
|
0.0 - 0.8
|
2
|
|
0.9 - 1.7
|
4
|
|
1.8 - 2.6
|
7
|
|
2.7 - 3.5
|
8
|
|
3.6 - 4.4
|
6
|
|
4.5 - 5.3
|
4
|
b. Create a histogram for the data. Use class boundaries along the horizontal axis.
2. The data below consists of the number of hours of sleep that a sample of college students get in one night. {7.3, 8.1, 4.2, 6.0, 6.3, 5.9, 9.8, 6.1, 6.1, 7.5, 2.7, 6.3, 5.2, 7.5, 6.1, 5.6}
a. Use your calculator to find the mean and standard deviation of the sample, and label them with the correct variables and correct units. (Round to the correct number of decimal places.)
b. Find the median of the data by hand. Show your work.