# Worksheet 1b.

These guided exercises will give you the opportunity to practice the techniques and apply the concepts you learned in Chapter 1. You will need some paper, spreadsheet, or a tablet to work on the analyses.

- Say you surveyed students and employees at Douglas college regarding how many hours per month they listen to the radio. These are the data you collect:

Students: 15,13,17,20,15,18,11,2,14,10,14,10,15,11,1

Employees: 27,25,20,4,12,27,15,14,25,15,27,18,23,15,24

Steps for Making a Frequency Table

- Make a list down the page of each possible value, from lowest to highest
- Chunk those values into ranges if making a grouped frequency table.
- Tip: Make categories that start with “0”s or “5″s and end with “4”s or “9”s (e.g. 0-4, 5-9 or 0-9, 10-19), or if there is no possible “0” value for that variable, use categories that start with “1”s or “6”s and end with “5”s or “10s” (e.g., 1-5, 6-10 or 1-10, 11-20).
- Tip: Ideally you want at least 4, but not more than 8 categories

- Go one by one through the scores, making a mark for each next to its value on the list
- Make a table showing how many times each value on the list appears
- Figure the percentage of scores for each value

d. Create graphs below, by dragging and dropping chart elements, to represent first the student and then the employee data. Be sure to label axes and title the graphs appropriately.

- For each of the following types of data, indicate the level of measurement and the corresponding type of graph that would be suitable: