2.1.3 Scatter Plot

The X-Y scatter plot is one of the most powerful tools for exploratory data analysis. GRAPHID includes a host of features to enhance the basic scatter plot. These features are:

        Local regression

        Local mean

        Local median.

These are nonparametric regression lines, which are constructed through smoothing with order statistics (k- nearest neighbor smoothing). The number of neighbors is to be decided by the researcher.