SEMI International Standards
TASK FORCE ORGANIZATION FORM (TFOF)
Date Prepared: 08/30/2004Revised (if Applicable): 05/18/2006

Name of Task Force (TF): Statistical Methods Task Force

Global Technical Committee: Liquid Chemicals
Originating Technical Committee Region: North America


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1. Charter: (State the objective of the proposed TF.)
Develop a SEMI Guide to support development of standardized statistical methodology for determining whether data is in control.
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2. Scope: (Define the specific activities that the TF will conduct.)
Develop a Guide to support development of standardized statistical methodology for determining whether data is in control. The following areas are to be addressed:

- How to handle method detection limit (MDL) censored data

- How to handle sample size for each measured property

- How to set risk levels in statistical procedures

- How to deal with non-normality

- How to determine and handle outliers

- How to estimate variation used in control limit construction

- Which data to use in control limit estimation?

- Frequency with which control limits will be determined

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3. Formal linkages with TFs in other Regions/Locales: (Show each associated TF and its parent global technical committee; indicate nature of relationship – global TF, observer TF, etc.)

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4. Formation Date:(TF formed on)

Task Force formed on:
Task Force approved by Committee/GCS on: