Example: Paneled Histogram

We will create a histogram that is paneled by gender so we can compare the frequency distributions of salary for men and women. The frequency distribution shows how many cases/rows lie within specific salary ranges. The paneled histogram can help us further analyze the difference in salaries between genders.

Note: This example uses Employee data.

  1. Add a Graphboard node and open it for editing.
  2. On the Basic tab, select Current Salary .
  3. Select Histogram.
  4. Click the Detailed tab.
  5. In the Panels and Animation group, choose gender from the Panel Across drop-down list.
  6. Click Run.
Figure 1. Paneled histogram
Paneled histogram

We can observe the following:

  • Neither frequency distribution is a normal distribution. That is, the histograms do not resemble bell curves, as they would if the data were normally distributed.
  • The taller bars are on the left side of each graph. Therefore, for both men and women, more make lower rather than higher salaries.
  • The frequency distributions of salary among men and women are not equal. Notice the shape of the histograms. There are more men who make higher salaries than woman who make higher salaries.