Graph builder bins

PartialFish8033 — Tue, 30 Jun 2026 09:29:52 GMT

In Graph Builder, when a continuous variable is used as Group X with Levels(6) (e.g. Group X(:Mean rank, Levels(6))), how are the interval boundaries determined? They appear not to be equal-width or equal-frequency bins. Is the algorithm documented anywhere?

I'm preparing a manuscript and would like to describe accurately how Group X intervals are generated.

I understand that Graph Builder automatically determines the intervals when using

Group X(:Mean rank, Levels(6))

and that custom intervals require creating a separate binned column.

My question is: what algorithm does Graph Builder use to determine the automatic interval boundaries? They do not appear to be equal-width or equal-frequency bins. Is the algorithm documented anywhere?

Re: Graph builder bins

jthi — Tue, 30 Jun 2026 10:12:51 GMT

Essential Graphing > Graph Builder > Graph Zones > Categorical and Continuous Variables in Group X or Y Zones

When a continuous variable is added to a grouping zone, Graph Builder uses quantiles of the data to divide the variable into five groups.

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Graph builder bins

Re: Graph builder bins