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# Types of Graph - PowerPoint PPT Presentation

Types of Graph. And when to use them!. Line Graph. Line Graph. Used to show trends Variable plotted on X (bottom) musts be continuous Common type is “time series” where X = time CANNOT be used to graph data where X is discrete. Scatterplot. Scatterplot.

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## PowerPoint Slideshow about 'Types of Graph' - chick

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### Types of Graph

And when to use them!

• Used to show trends

• Variable plotted on X (bottom) musts be continuous

• Common type is “time series” where X = time

• CANNOT be used to graph data where X is discrete

• Used to show relationships between variables

• X variable must be continuous

• If one variable is believed to cause or explain changes in the other, that variable is plotted on the X

• Used to compare amounts or frequencies in data that represents different categories (discrete data sets)

• Categorical data set is plotted on X, quantitative (continuous) on the Y

• Often used incorrectly to graph data with continuous X variables

• Used when discrete X is converted to categories (“bins”)

• Y represents frequency of data within each “bin”

• Used for same kind of data as bar chart

• Each slice = data category

• Slice size shows relative proportion of observations within each category