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Types of Graph

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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Types of Graph

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  1. Types of Graph And when to use them!

  2. Line Graph

  3. 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

  4. Scatterplot

  5. Scatterplot • 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

  6. Bar Graph

  7. Bar Graph • 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

  8. Histogram

  9. Histogram • Used when discrete X is converted to categories (“bins”) • Y represents frequency of data within each “bin”

  10. Pie Chart

  11. Pie Chart • Used for same kind of data as bar chart • Each slice = data category • Slice size shows relative proportion of observations within each category

  12. Summary: Types of Graph

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