【正文】 :::: :::: ..:::::. ++++++AGING (1) .: :: :.: . ..:::::: . . . :. ::::::::::.::: ++++++AGING(2) . : : . : : : . . :::.:.:.: : . .:.::::::::: :.:. ++++++AGING (3) .. : . ::: . ..:: . . : .: ... ::::::::::.::....... ++++++AGING(4) . :.: . ::: . : : .: :. :.:::: :..:.::::::.:: . ++++++AGING(5) 40 0 40 80 120 160 Dotplot Results... OneWay Analysis of Variance Analysis of Variance on AGING Source DF SS MS F p COUNTRY 4 424064 106016 Error 295 126978 430 Total 299 551042 Individual 95% CIs For Mean Based on Pooled StDev Level N Mean StDev +++ 1 60 (*) 2 60 (*) 3 60 (*) 4 60 (*) 5 60 (*) +++ Pooled StDev = 35 70 105 ANOVA Results... Measure Analyze Improve Control GE Company Proprietary Version 24 Minitab Primer Choice of Tool Depends Upon the Requirements of the Analysis ? STAT ? Basic Statistics ? Descriptive Statistics ? 1Sample t ? 2Sample t ? Correlation ? Tables ? Tally ? Chisquare Test ? CALC ? Probability Distributions ? Normal ? STAT ? ANOVA ? ONEWAY Basic Statistical Analysis ? GRAPH ? Plot ? Time Series Plot ? Histogram ? Boxplot ? Character Graphs ? Dotplot ? STAT ? Control Charts ? XbarS ? SPC ? Run Chart Graphical Analysis ? STAT ? Regression ? Regression ? Fitted Line Plot Regression Analysis Demonstration Five GE Company Proprietary Version 25 Minitab Primer Example: Invoice Disputes Data File: Variables: Process, Invoices, and Disputes Description: this data set contains the number of invoices issued to customers using six different processes. Invoices is the number issued and Disputes is the number of customer issues pending problem resolution. Determine whether the results of this test indicate a difference in the six processes. Measure Analyze Improve Control GE Company Proprietary Version 26 Minitab Primer process invoices disputes 1 54 16 2 47 13 3 52 15 4 53 8 5 49 15 6 52 2 Results of the Six Trials... Results of the ChiSquare Test... Hypothesis Test Ho: (OE)2 = 0 Ha: (OE)2 0 a: n: (n1) = 5 Decision Rule: If p a, Reject Ho Expected counts are printed below observed counts invoices disputes Total 1 54 16 70 2 47 13 60 3 52 15 67 4 53 8 61 5 49 15 64 6 52 2 54 Total 307 69 376 ChiSq = + + + + + + + + + + + = df = 5, p = Is the Result Significant at the Alpha Level? Measure Analyze Improve Control GE Company Proprietary Version 27 Minitab Primer Example: Receivables Process Control Data File: Variables: Days Description: Collection terms are 60 days. Payments are entered into a data collection system in the same timeorder as they are received. Determine whether or not the process is in control and capable of satisfying the terms. Measure Analyze Improve Control GE Company Proprietary Version 28 Minitab Primer Results of Analysis... Is the Process in Control and Capable? Measure Analyze Improve Control 1 098765432107 06 05 0S u b g r o u pMe