tailieunhanh - The Microguide to Process Modeling in Bpmn 2.0 by MR Tom Debevoise and Rick Geneva_10

Tham khảo tài liệu 'the microguide to process modeling in bpmn by mr tom debevoise and rick geneva_10', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Weighting to Improve Fit Residual Plot for Weight Function The fit output and plot from the replicate variances against the replicate means shows that the a linear fit provides a reasonable fit with an estimated slope of . Note that this data set has a small number of replicates so you may get a slightly different estimate for the slope. For example S-PLUS generated a slope estimate of . This is caused by the sorting of the predictor variable . where we have actual replicates in the data different sorting algorithms may put some observations in different replicate groups . In practice any value for the slope which will be used as the exponent in the weight function in the range to is probably reasonable and should produce comparable results for the weighted fit. We used an estimate of for the exponent in the weighting function. http div898 handbook pmd section6 2 of 6 5 1 2006 10 22 40 AM . Weighting to Improve Fit Residuals From Weight Estimation Fit ln Replicale Means The residual plot from the fit to determine an appropriate weighting function reveals no obvious problems. Numerical Output from Weighted Fit Dataplot generated the following output for the weighted fit of the model that relates the field measurements to the lab measurements edited slightly for display . LEAST SQUARES MULTILINEAR FIT SAMPLE SIZE N 107 NUMBER OF VARIABLES 1 REPLICATION CASE REPLICATION STANDARD DEVIATION REPLICATION DEGREES OF FREEDOM 01 29 NUMBER OF DISTINCT SUBSETS 78 PARAMETER ESTIMATES APPROX. ST. DEV. T VALUE 1 A0 2 A1 LAB 36. RESIDUAL STANDARD DEVIATION RESIDUAL DEGREES OF FREEDOM 105 REPLICATION STANDARD DEVIATION http div898 handbook pmd section6 3 of 6 5 1 2006 10 22 40 AM . Weighting to Improve Fit REPLICATION DEGREES OF FREEDOM 29 This output shows a slope of and an intercept term of .