GRAPHS

Bar Graphs Line Graphs Pie Graphs Histogram

Types of Graphs

Def - a chart with rectangular bars with lengths proportional to the values that they represent. Used for comparing two or more values.

Bar Graph

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NorthSouthWest

Def - A graph that uses points connected by lines to show how something changes in value (as time goes by, or as something else happens).

Line Graph

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NorthSouthWest

Def - a circular chart divided into sectors, illustrating relative magnitudes or frequencies. It shows parts of a whole.

Pie Graph

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Def - Histograms resemble bar charts closely. One main difference is that histograms will normally be shown with the bars touching each other, with no spacing in between, to account for the continuous nature of the data, whereas simple bar charts tend to have spaces to separate the bars.

Histogram

Given the following sets of data, decidewhich of the four types of graphs wouldbe most appropriate to display the data.

Which Graph?

32% of Americans, 12% of Lithuanians, 21% of Germans, 27% of Spaniards, and 8% of others have gained more than 30 pounds in the past four years.

What would be the best graph to represent this information?

Answer: A Pie Graph!

Others8%

Spaniards

Germans21%

Americans32%

Lithuanians12%

We want to compare the total revenues of five different companies.

What would be the best graph to represent this information?

Answer: Bar Graph!

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We want to compare populations of pandas over the past seven years.

What would be the best graph to represent this information?

Answer: Line Graph!

Population of Pandas

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