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Showing a Residual Plot
You can show a residual plot to determine how well a line fits data. The work
area must include a scatter plot and one or more movable lines, regressions, or
plotted functions for Show Residual Plot to be available.
▶ With a scatter plot, line of regression, and/or movable line in the work area,
click the Analyze menu, and click Show Residual Plot > Residuals.
Notes:
• With multiple regressions or functions and movable lines plotted, you can
select each by clicking the line to show its residual plot.
• Click and hold a dot on the residual plot to see the residual.
• The residual plot for the selected regression or function displays in the
work area.
• For consistency in comparing sets of data, residual plots do not rescale
when you move from one function or regression to another.
• Select a function or regression before a showing residual plot. If no
function or regression is selected and there are several plotted,
Data&Statistics arbitrarily selects the function or regression for showing
the residual plot.
• Axes can be adjusted by clicking and dragging.
Removing a Residual Plot
▶ With a scatter plot, line of regression, and/or movable line in the work area,
click the Analyze menu, and click Hide Residual Plot.
Data&Statistics Application 389