November, 2002

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Versions Affected:

JMP 5.0 and 5.0.1

Functionality Affected:

Partition Platform

Expected Release Date:

December 2, 2002
(Subject to change)

This is to alert you that results generated by the Partition Platform in Releases 5.0 and 5.0.1 received before November 2002 may generate incorrect calculations. For the two reasons detailed below, we strongly recommend that you install this update to replace any previous Version 5 installations.

1. JMP is committed to quality and accuracy. This update improves the Partition platform from release 5.0 and and the prior release 5.0.1 (before Nov 2002). In those prior releases, Partition calculated incorrect candidate statistics only for splits involving:

  • categorical responses with exactly 2 levels, or

  • categorical factors with 3 or more levels

In all releases, Partition has provided correct results for splits involving:

  • categorical responses with 3 or more levels

  • categorical factors with exactly 2 levels

  • continuous factors

  • continuous responses

We apologize for any inconvenience and appreciate your understanding. For more information, please visit Or call technical support at (919) 677-8008.

2. You must install 5.0.1 (November 2002 revision) to be able to apply future updates. Please note that release 5.0.1 (November 2002 revision) will not be available as a downloadable update; this update CD is the only way to update release 5.0 or the prior release 5.0.1.

To continue receiving free maintenance releases, you must register your software. If you have not already registered your software, please either return the registration card in the JMP package or register online at

For information regarding other known problems with JMP software, common user errors, undocumented features, and workarounds for problems, visit the JMP Knowledge Base at

As always, we welcome your comments and suggestions. Please do not hesitate to contact us at Thank you.

Action Plan

A fix was prepared immediately and is to be distributed as a new release of JMP 5.0.1. This release will be shipped free of charge to all registered users of Version 5.0 and 5.0.1 after the release date. See the Problem Alert page on the JMP Website for the latest information.


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