Relying on p-values to reach business decisions is common, which is reason for concern. Conducting analysis that’s too heavily based on p-values and engages in an unfettered quest for statistical significance can lead to decisions that are fundamentally unsound. To understand why, we’re going to...
Why are statistics alone a limited way to understand data? How do graphs help you understand data? These were the subjects of a 1973 paper in "The American Statistician" written by Francis Anscombe. Anscombe thought traditional statistical schooling under appreciated the role that graphs play in enhancing...
.syntaxhighlighter code{font-size:0.9em!important;} The Problem During a recent engagement a client asked a question I hear occasionally regarding Tableau which basically boiled down to: "How do I show marks for the percentile ranks of my customers by Sales?" The client wanted to aggregate their measure, we're using Superstore Sales here,...
Does your organization use data to better inform its marketing? Have you heard the words “segmentation” or “micro-targeting” thrown around and don’t quite understand what it means? In the spirit of the World Series, I give you an example of customer segmentation using baseball. The goal...
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