Mack T-12 Precision Matrix Preliminary Analyses Presented to T-12 Task Force October 11, 2005 Jim Rutherford (510)

October 11, 2005Mack T-12 Precision Preliminary2 Transformations Using all data (26 tests) with the full model (oil, lab, stand(lab), rings), we get The natural log transformations were used in these analyses.

October 11, 2005Mack T-12 Precision Preliminary3 Outlier Screening TMC dataset has some outlier screened, some not. For lnTRWL and CLW, there is evidence of a profile. However, the interaction with lab says the profiles aren’t the same for all labs. For these analyses, outlier adjustments without profiles were used. If labs F & D are removed for lnTRWL and labs B, F & D are removed for CLW, the cylinder x lab interaction becomes insignificant but the cylinder effect remains significant. However, for CLW, the cylinder x stand interaction is still marginally significant

October 11, 2005Mack T-12 Precision Preliminary4 All data 1.First pass model all data 26 tests: Result = f(oil, stand(lab), lab, rings) Results: lnPbFNL, lnDPb2FNL, CLWoa, lnTRWLoa, OCFNL, BWLUoa, IR First pass model “outliers” lnDPB2FNL matrix PC10E lab A CLWoa matrix old rings PC10B lab G OCFNL matrix old rings PC10E lab B IR prematrix old rings lab D 3.First pass model significant effects Rings: OCFNL, lnTRWLoa Oil & Lab: CLWoa

October 11, 2005Mack T-12 Precision Preliminary5 All tests with new rings 1.New rings model 16 tests: Result = f(oil, stand(lab), lab) Results: lnPbFNL, lnDPb2FNL, CLWoa, lnTRWLoa, OCFNL, BWLUoa, IR First pass model “outliers” lnPbFNL PC10E lab A lnDPB2FNL PC10E lab A BWLUoa PC10E lab A IR PC10E lab B 3.First pass model significant effects Oil & Lab: CLWoa Oil: IR Marginally significant: Oil: OCFNL Lab: IR250300

October 11, 2005Mack T-12 Precision Preliminary6 Matrix only 1.Matrix only model all data 16 tests: Result = f(oil, lab, rings) Results: lnPbFNL, lnDPb2FNL, CLWoa, lnTRWLoa, OCFNL, BWLUoa, IR Matrix only model “outliers” lnPbFNL PC10E lab A lnDPB2FNL matrix PC10E lab A CLWoa matrix old rings PC10B lab G OCFNL matrix old rings PC10E lab B BWLUoa matrix PC10E lab A 3.Matrix only model significant effects Oil & Lab: CLWoa Marginally significant: Rings: lnTRWLoa, OCFNL, Oil & Lab: IR250300

October 11, 2005Mack T-12 Precision Preliminary7 Precision Analyses *E p =(LN(anchor+median/2)-LN(anchor-median/2))/ ((LN(anchor)+S pp /2)-(LN(anchor)-S pp /2))