Histogram
Use the same data of home run
numbers of Ruth and McGwire, we'll demonstrate Histogram here.
At this time, we need to enter the home run numbers of Ruth and
McGwire into two columns as shown.
Choose Graph>Histogram
from menu, with both Ruth and McGwire selected as graph variable,
separate histograms are obtained. You can type in command in session
as below to get the same result.
MTB>histogram 'Ruth' 'McGwire
When comparing two or more distributions,
the displays should be drawn on axes with the same range. Specifying
the midpoint or cut points for the histogram intervals can do
the job. Select Option button on the histogram dialog box, click
on Midpoint(or Cut point) and specify the positions under Definition
of Intervals.
Graphs with exactly the same
X and Y axis can be obtained by clicking Frame on the histogram
dialog box and then select Multiple graphs.

The results are shown below.

