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Daily Archives: January 14, 2015

How to Calculate an NPS Margin of Error

Best of Blog, Data Analysis & Analytics, Methods & ToolsBy Joe HopperJanuary 14, 2015

One critique sometimes heard about NPS scores is that they can’t be stat tested.  That is not true.  Though I know of no statistical packages that do it automatically, it is an easy calculation you can do on your own.  Here’s the math: n = sample size a = % promoters b = % passives…

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