Using Bar Graphs Continued

1. First, read the titles and subtitles to learn what the graph is about. This graph shows how many people share last names in Inverness County. (These figures are not true.)

2. Next, read the information on the vertical and horizontal scales to find out what, and how much, each bar represents. In this graph, the vertical scale shows how many people have a name. The horizontal scale shows the name.
   Example: There are 800 people with MacDonald as their last name.

3. Notice what unit of measure is being used. In this case, the unit of measure is a single person.

4. Compare the lengths of each bar to see what they tell you. Sometimes, you will need to estimate numbers between two marks on the scale. Also, you might want to use something straight to make sure you are reading in the right place.

Study the graph and find out the following:

1. What is the most common last name?
2. What is the least common name?
3. How many people have “Gillis” as their last name?
4. How many Poiriers are there compared to Campbells?
5. How many people have “Ryan” as their last name?
6. If the Campbells, Poiriers, Ryans and Smiths were added together, would they outnumber the MacDonalds?