g Chart Formulas

QI Macros Can Calculate Them For You!

Draw a g Chart using QI Macros

  1. Select your data.
  2. Select g chart on QI Macros menu.
  3. QI Macros will do the math and draw the graph for you.

Go Deeper:

g Charts evaluate process stability when tracking rare events like:

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

g Chart Formula

g chart formula

Center Line = 0.693*gbar

g = time or units between rare occurrences

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The g chart is just one of the tools included in QI Macros SPC Software for Excel.

Why Choose QI Macros Over Other Control Chart Software?

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  • Works right in Excel
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