ANOVA - Business Performance Improvement (BPI)

January 25, 2024February 8, 2024 bizpi

How to manually calculate Tukey’s Honestly Significant Difference (HSD) for comparing factor levels

I was recently asked by a client to explain how the Tukey’s HSD (Honestly Significant Difference) is calculated, but I

a/b test a/b testing ANOVA click rate click thru rate CTR Minitab online marketing split test split testing statistical significance

December 24, 2014November 11, 2019 bizpi

Split testing website marketing messages with Minitab’s Chi-Square % Defective comparison tests

Six sigma techniques have expanded beyond traditional manufacturing companies, into healthcare, movie industry, government and now online marketing. Split testing

ANOVA charts confidence control correlation design DOE experiments gage R&R graphs hypothesis Minitab MSA quality regression Six Sigma software SPC statistics training

December 13, 2012April 14, 2021 bizpi

Online statistics training from Minitab has great animation and examples

Minitab statistical software is one of the most powerful and popular programs around, especially for those in the Six Sigma

Lean Six Sigma Bursts

We share our takes and thoughts on a variety of topics related to process improvement (specifically Lean and Six Sigma methods), Bursts are rapid improvement activities, so this sounded like a good word to use for these short audio clips. We’ll try to keep them under 5 minutes each.

The following was a clip from a recent presentation, where I discuss how hypothesis testing can help you draw more statistically valid conclusions from data, and avoid misleading or incorrect conclusions.

I share two examples. The first was a data set from the Denver Sheriff's Department, where they graphed and analyzed intake use of force incidents, but their conclusions don't seem to match the graphic.

The 2nd example was data I pulled for a nonprofit I ran that showed the day of the week and time of day had no impact on click through rates on our monthly email newsletter.

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