How does JMP perform Group X function in Graph Builder?<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />I am curious how JMP organizes data with the Group X function. For this example:
- Temperature is X axis
- Y is Y axis
- Condition is used for overlay
- Measurement is used in Group X
Does JMP simply create groups based on the number of data points?
Re: How does JMP perform Group X function in Graph Builder?It uses quantiles.
-Jeff
Re: How does JMP perform Group X function in Graph Builder?Does it use quantiles to divide the data or simply put equal amounts of data into each group?
Re: How does JMP perform Group X function in Graph Builder?For a continuous column in either the Group X or Group Y role, JMP uses quantiles to divide the data into 5 groups.
As Ian@JMP points out, you can right click on the grouping variable label and select Number of Levels to change how many groups are created (still based on quantiles).
Re: How does JMP perform Group X function in Graph Builder?If you don't like what JMP gives you by default, you can easily make changes. See 'Separate Variables into Groups' at:
http://www.jmp.com/support/help/Add_Variables.shtml#100031
Re: How does JMP perform Group X function in Graph Builder?because your X grouping column is continuous JMP divides the groupings into equal number groups. If the column was ordinal or nominal it would create a grouping for each value found for the column.
