Regression Is NOT Easy
Regression is NOT easy – to do competently. Regression is arguably the workhorse of statistics and…
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Data & Analytics
What is Bayesian Statistics?
Important notes: Below is a small, non-technical excerpt from the Stata 15 Bayesian Analysis Reference Manual.…
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How Tech is Impacting America’s Opioid Crisis
The New York Times has called it the “deadliest drug crisis in American history,” and…
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Quant Essentials: Multivariate Analysis
In RW Connect’s new Quant Essentials series, we discuss critical methodological skills in simple, jargon-free language. The…
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How Not To Lie With Statistics
"What is truth?" and "What is a lie?" are questions that have drawn the attention of philosophers, theologians, legal…
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Demystifying Data Science
Marketing scientist Kevin Gray asks Dr. Randy Bartlett of Blue Sigma Analytics what Data Science…
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Some Questions I’m Frequently Asked
Many of my contacts are former colleagues or current business partners but some are not. Following…
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Life as a Statistical Subcontractor: A Few Tips
Since 2008, I've worked privately as a statistical and data science consultant. I've given some background on…
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Why Statistical Consulting is Hard
At least two things in life are certain: death and uncertainty. Taxes can be avoided…
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What is Statistics?
The field of statistics is finally getting some long-overdue attention. I used to joke that…
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What is Marketing Research?
When I began my marketing research career in the 1980s, I never would have imagined…
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