g Chart (geometric) for Excel

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g Chart from QI Macros in Excel

Purpose: Determine stability of rare events (less than 1% of the time) by tracking the time between them.

The g chart will help evaluate process stability when tracking rare events:

surgeries between infections
days between accidents (safety)
days between wrong site or wrong patient surgeries

Just open the g chart template and track each period (day/week/month) where you met or missed an objective (e.g., no accidents). The template will calculate the number of days met/missed and the control limits. On any given day, the business either:

Met the objective (no accidents)
Missed the objective (accident)
No data (forgot to track the information)

g charts are just one of the tools included in the QI Macros for Excel SPC Software for Excel.

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The QI Macros for Excel $139, is an inexpensive easy to use set of Excel add-ins for statistical process control and Lean Six Sigma. It draws line, pie, bar, pareto, box whisker, histogram (Cp, Cpk), scatter and control charts (with stability analysis).

It contains over 70 fill in the blank templates such as the Ishikawa diagram, QFD, DOE, FMEA, PPAP, and Gage R&R for MSA. Performs ANOVA, t-test, F-test, and regression analysis.

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