# Example: Scatterplot Matrix (SPLOM)

We will create a scatterplot matrix of several different variables so that we can determine whether there are any relationships among the variables in the dataset.

*Note*: This example uses *customer_subset*.

- Add a Graphboard node and open it for editing.
- On the Basic tab, select
*Age in years*,*Household income in thousands*, and*Credit card debt in thousands*. (Use Ctrl+Click to select multiple fields/variables.) - Select SPLOM.
- Click Run.
- Maximize the output window to view the matrix more clearly.

We can observe the following:

- The histograms displayed on the diagonal show the distribution
of each variable in the SPLOM. The histogram for
*age*appears in the upper left cell, that for*income*in the center cell, and that for*creddebt*in the lower right cell. None of the variables appears normally distributed. That is, none of the histograms resembles a bell curve. Also, note that the histograms for*income*and*creddebt*are positively skewed. - There does not seem to be any relationship between
*age*and the other variables. - There is a linear relationship between
*income*and*creddebt*. That is,*creddebt*increases as*income*increases. You may want to create individual scatterplots of the these variables and the other related variables to explore the relationships further.