Double Bar Graphs. Bar Graph A bar graph can be used to display and compare data The scale should include all the data values and be easily divided into.

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Presentation transcript:

Double Bar Graphs

Bar Graph A bar graph can be used to display and compare data The scale should include all the data values and be easily divided into equal intervals.

How to interpret a Bar Graph? How many of Mrs. Handley’s students are band members? How many of Mrs. Handley’s students are band members? How many of Mrs. Handley’s students are not band members? How many of Mrs. Handley’s students are not band members? The bar graph shows Mrs. Handley’s students by gender and band membership.

Double Bar Graph Can be used to compare two related sets of data Can be used to compare two related sets of data

How to make a Double-Bar Graph? Choose a scale and interval for the vertical axis. Choose a scale and interval for the vertical axis. Draw a pair of bars for each set of data. Use different colors to show two sets of data. Draw a pair of bars for each set of data. Use different colors to show two sets of data. Label the axes and give the graph a title. Label the axes and give the graph a title. Make a key to show what each bar represents. Make a key to show what each bar represents.

The table shows the highway speed limits on interstate roads within three states RuralUrbanState 70 mph 65 mph Florida 70 mph Texas 65 mph 55 mph Vermont

Step 1 Choose a scale and interval for the vertical axis. Choose a scale and interval for the vertical axis.RuralUrbanState 70 mph 65 mph Florida 70 mph Texas 65 mph 55 mph Vermont

Step 2 Draw a pair of bars for each state’s data. Use different colors to show urban and rural. Draw a pair of bars for each state’s data. Use different colors to show urban and rural.RuralUrbanState 70 mph 65 mph Florida 70 mph Texas 65 mph 55 mph Vermont

Step 3 and 4 Label the axes and give the graph a title. Label the axes and give the graph a title. Make a key to show what each bar represents Make a key to show what each bar represents Speed Limit (mi/h) Urban Rural Speed Limit on Interstate Roads

Can you now make double bar Graph?

The list below shows the results of two tests taken by students in Mrs. Handley’s Math Class. NameTest OneTest Two Tom7285 Jessica8095 Ralph6298 Lucy85100

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