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Continue reading →: My New Favorite Statistics & Data Analysis Book Using RNOTE: The 3rd Edition (Purple Swan) was released in April 2019. There is a companion book that presents end-to-end examples of each of the methods. As of today, I now have a NEW FAVORITE introductory statistics textbook… the one I’ve always dreamed of having. I’ve been looking for a book to use…
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Continue reading →: ASQ Asks: What Can We Do to Encourage STEM? I Say: STEAM
In his March 2015 post, ASQ CEO Paul Borawski asks “What can we do to encourage the next generation of STEM (Science, Technology, Engineering, and Math) professionals?” My answer will be short today because I’ve been actively working on that for the past several months with a senior capstone project…
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Continue reading →: Sampling Distributions and Central Limit Theorem in R
The Central Limit Theorem (CLT), and the concept of the sampling distribution, are critical for understanding why statistical inference works. There are at least a handful of problems that require you to invoke the Central Limit Theorem on every ASQ Certified Six Sigma Black Belt (CSSBB) exam. The CLT says that…
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Continue reading →: One-proportion z test in R
For quite a while, I’ve been confused by the behavior of the prop.test function in R: 1) the p-values always seem to be slightly off, and 2) the confidence intervals never seem to be symmetric around my estimate of the population proportion. Today, I decided I was going to figure out what…
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Continue reading →: Writing about Business Model Innovation: Where Do You Start?Innovation is what happens when we create new value by meeting needs. Sometimes, this comes in the form of a new process, product, or program. Other times, it comes in the form of reconfiguring the whole ecosystem for creating and sharing that value — also known as “business model innovation.” A…
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Continue reading →: Change vs. Transformation: What’s the Difference?
Last week, on the Lean Six Sigma Worldwide discussion group, Gaurav Navula (CEO of Perky Pat India) asked us to reflect on the difference between change and transformation. Change management was a major thrust in the 1990’s and early 2000’s, but you don’t hear as much about it anymore. Today, the…
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Continue reading →: Why the Ban on P-Values? And What Now?
Just recently, the editors of the academic journal Basic and Applied Social Psychology have decided to ban p-values: that’s right, the nexus for inferential decision making… gone! This has created quite a fuss among anyone who relies on significance testing and p-values to do research (especially those, presumably, in social…
Hello,
I’m Nicole
Since 2008, I’ve been sharing insights and expertise on Digital Transformation & Data Science for Performance Excellence here. As a CxO, I’ve helped orgs build empowered teams, robust programs, and elegant strategies bridging data, analytics, and artificial intelligence (AI)/machine learning (ML)… while building models in R and Python on the side. In 2025, I help leaders drive Quality-Driven Data & AI Strategies and navigate the complex market of data/AI vendors & professional services. Need help sifting through it all? Reach out to inquire – check out my new book that reveal the one thing EVERY organization has been neglecting – Data, Strategy, Culture & Power.
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