Initial Data Exploration and Dataset Preparation Using VisMiner - Visual Data Mining: The VisMiner Approach - page 22

Figure 2.10 Histogram

of neighboring bars. The overcome this, the process of smoothing adjusts each
bar's height by also factoring the height of neighbors.

Click on the “ þ ” button in the title bar to the right of the “Smooth” label to
somewhat smooth the bar heights.

Notice the adjustments in bar height.

Repeatedly click on the “ þ ” button until it disappears.

Each time the “ þ ” button is clicked, the neighboring bars contribute more and
more. At the highest possible level of smoothing, we see two and maybe three
sub-populations of somewhat normally distributed values. During initial explo-
ration, when we see multimodal distributions similar to the PetalLength