2D Histograms - Double-Y
The Double-Y histogram
can be considered to be a combination of two separately scaled multiple
histograms. Two different series of variables can be selected. A frequency
distribution for each of the selected variables will be plotted but the
frequencies of the variables entered into the first list (called Left-Y variables)
will be plotted against the left-Y
axis, whereas the frequencies of the variables entered into the second
list (called Right-Y variables)
will be plotted against the right-Y
axis. The names of all variables from the two lists will be included in
the legend followed by a letter L
or R, denoting the Left-Y
and Right-Y axis, respectively.
This graph is useful to compare distributions of variables with different
frequencies.

See also, 2D Histograms
and Graphs
- 2D Histograms.