Diseño De Experimentos Minitab

Analyzing Discrete Data
Presented by: Christopher W. Paret Minitab Inc

Two Classifications of Data
Continuous • Has no boundaries between adjoining values.

• Examples: Temperature, weight,length, time…….
Discrete • Has clear boundaries.

• Examples: Pass/Fail, calendar, age, proportions……..

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MINITAB Tools & Six Sigma
MINITAB Release 14 Tools
•Attribute Agreement Analysis • Time Series • Binomial Capability Analysis • Proportions Tests • Control Charts (P, NP, C, & U)

Six Sigma

• Define • Measure • Analyze • Improve • Control

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Times Series Plot
Using Time Series plots in the Define/Measure Phases and Improve Phase

Time Series Plot of Percent DelinquentInvoices
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Percent Delinquent Invoices

54 53 53 52 51

50 45 40 35 30

49 48 47 46 46

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= Mean Delinquecy Rate 50%

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Goal 25% Delinquency Rate = Sep-01 Nov -01 Jan-02 Mar-02 May -02 Jul-02 Sep-02 Nov -02 Jan-03 Mar-03 May -03 Jul-03

Date

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Delinquency Rates
Taxed States vs. Non-Taxed ‘Ship to’Locations (Aug 01 – Aug 02)
Test and CI for Two Proportions Sample 1 2 X 465 673 N 1122 1342 Sample p 0.414439 – Non Taxed ‘Ship To’ Locations 0.501490 – Taxed ‘Ship To’ Locations

Estimate for p(1) -...