A bar graph can be drawn either vertically (up and down) or horizontally (left to right).
1. |
Draw a vertical bar graph from the data given in the table |
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In a vertical bar graph, the bars are vertical. |
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Reasoning |
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I labeled the bar graph Salary for positions in the NFL.
Since the bars were to run vertically, I labeled the horizontal axis with the positions and the vertical axis with the salary.
To prevent having to write all the zeroes, I chose a scale so that each space is $1,000,000.
Draw bars with lengths equal to the salary.
Label each bar with the appropriate position.
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2. |
Draw a horizontal bar graph from the data given in the table |
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In a horizontal bar graph, the bars are horizontal. |
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Reasoning |
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I labeled the graph Cars per Household in the 20th Century.
Since the bars were to run horizontally, I labeled the horizontal axis with the cars per family and the vertical axis with the year.
To make the graph bigger, I let each two spaces equal .5.
Draw bars with a length equal to the number of cars per family.
Label each bar with the appropriate year. |
3. |
Make a data table for the following bar graph |
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Reasoning |
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Each space is worth $10.
For each year, determine how long each bar is.
For 1995 and 1997, the bars stop halfway between the two spaces for a reading of $15 and $25.
For 1996, 1998 and 1999, the bars stop on a space for $30, $50 and $40.
In your table, pair the year with the money made. |
4. |
Answer the following questions by reading the bar graph. |
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Question |
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Reasoning |
| A. |
What was the population of Barville in 1920?
Answer: 500
Look at the length of the bar in 1920. |
| B. |
In what year did Barville have a population of 850?
Answer: 1980
Find the year where the bar has a length of 850.
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| C. |
Between what two years did Barville experience its greatest increase in population?
Answer: Between 1920 and 1930
Find where the biggest increase in the length of the bars is, by counting spaces. |
| D. |
Between what two years did Barville experience its greatest decrease in population?
Answer: Between 1960 and 1970
Find where the biggest decrease in the length of the bars is by counting the spaces. |
| E. |
By how much did the population of Barville increase between 1910 and 1950?
Answer: 1500 - 400 = 1100
Take the length of the bar in 1950 and subtract the length of the bar in 1910. |
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Try these exercises |
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Use the space provided for each question to write your answers. |