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Yearly Archives: 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…

Scrolling vs. Paging on Mobile Surveys

Scrolling vs. Paging on Mobile Surveys

Survey Design, Survey TipsBy Joe HopperJanuary 7, 2015

As more and more people use smartphones and mobile devices to fill out surveys, basic survey design decisions need to be revisited again and again.  How should surveys be laid out visually?  How should answer scales be constructed?  How should people be recruited to take surveys? Some of the latest answers to these questions come…

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