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Cat C13 Pre-Matrix 1 Data Analyses Presented to C13 Task Force Teleconference February 11, 2005

Cat C13 Pre-Matrix 1 Data Analyses Presented to C13 Task Force Teleconference February 11, 2005. Jim Rutherford (510) 242-3410 jaru@chevrontexaco.com. Summary. Five tests with two oils in an assortment of labs. Simple t-tests for most of the result variables.

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Cat C13 Pre-Matrix 1 Data Analyses Presented to C13 Task Force Teleconference February 11, 2005

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  1. Cat C13Pre-Matrix 1 Data AnalysesPresented to C13 Task ForceTeleconference February 11, 2005 Jim Rutherford (510) 242-3410 jaru@chevrontexaco.com

  2. Summary • Five tests with two oils in an assortment of labs. • Simple t-tests for most of the result variables. • ATGC, ATLC, and TGA_H500 had significant (p<0.05) oil differences • OCONPINC, TGFAVG, and FEWMH500 had marginally significant (0.05<p<0.10) oil differences • Adding sixth test from Caterpillar didn’t change much. • The only test for oil difference that changed substantially was IRINH500 – strange result. Looks like different units for some measurements. • If this test continues and it has averages over cylinders we will probably have to have cylinder outlier procedures. Cat C13 Pre-Matrix 1

  3. t tests (5 tests in TMC dataset) Cat C13 Pre-Matrix 1

  4. t tests (6 tests including Cat) Cat C13 Pre-Matrix 1

  5. Plots Open ‘PreMatrix1.html’ with your browser Cat C13 Pre-Matrix 1

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