I specialize in applied statistics:
R&D, mfg., engineering, QA/QC
(NOT clinical trials)
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My Goals
Since 1999, I’ve been consulting, instructing, and writing software in Applied Statistics, primarily for my more than 140 clients in the Medical Device, Biologics, and Pharmaceutical industries. My goals are to help companies perform statistical tasks correctly, accurately, and simply — while I try to ensure that they understand what they are doing.
I provide FREE RECORDINGS OF WEBINARS that I’ve given in recent years. See the “FREE-Webinars” link at the top of this page.
I also provide FREE STATISTICAL SOFTWARE. See 3 spreadsheets in the “Publications” section below; also, see “FREE-Validated Software” link at top of this page for 9 other spreadsheets and their validation reports.
Specialties
I do NOT perform analysis of clinical trials data, nor help with establishing or justifying sample size for clinical trials.
I specialize in the following:
— Confidence/Reliability Calculations, especially Reliability Plotting
— Statistical Process Control, and Process Capability calculations
— Metrology (e.g. Gage R+R)
— Normality Tests and Normality Transformations
— Sampling Plans
publications, etc.
Mouse-click on a title in the list, to download a PDF or spreadsheet, or to open the published website.
tHE HISTORY OF CORRELATION
by John Nicholas Zorich
Expected publication date of this 304-page book is 2024-12-04.
It is being published by the CRC Press division of Taylor & Francis, which is one of the “Big Four” publishers of STEM books and journals.
To pre-order The History of Correlation, visit one of these 3 websites:
Taylor-Francis / CRC Press
https://www.routledge.com/The-History-of-Correlation/Zorich/p/book/9781032865041
Amazon.com
https://www.amazon.com/History-Correlation-John-Nicholas-Zorich/dp/1032865040
Barnes & Noble
https://www.barnesandnoble.com/w/the-history-of-correlation-john-nicholas-zorich/1145984071?ean=9781032865041
Reasons for No Longer Teaching [or using] the Normal Approximation Confidence Interval.
Four Formulas for Teaching the Meaning of the Correlation Coefficient.
Better Alternatives to Sampling Plans.
Better AOQ (and AOQL) Formulas.
The Pre-history of Probability.
Literature Reference Justifications for Transformations to Normality.
Reliability Plotting Explained.
Complaint Rate Analysis spreadsheet (not validated)
Self-made Sampling Plans spreadsheet (not validated)
Sequential Sampling Plan Analysis spreadsheet (not validated)
Bad Memory Bridge (a simpler, more friendly way to play Contract Bridge)
resume + Certification
Mouse-click on title in list, to download corresponding PDF.