If you display multiple x variables or multiple y variables on a scatterplot or time series plot,
then you can add a secondary scale. For example, on the original scatterplot
below, the x variables (Height and
Weight) share the same
x-scale. The variables have different ranges, which makes the data values
for Height difficult to interpret.
If you assign one variable to a secondary scale with its own range, then the
data values for each variable are easier to read.
Original x-axis
x-axis with secondary scale
To add a secondary scale for one or more variables, use the following steps:
Double-click the graph.
Double-click the scale to open the
Edit
Scale dialog box.
On the Secondary tab, choose the variable to use
for the secondary scale.
Note
You can only add a secondary scale to a scatterplot and a
time series plot.
