Tagged: statistics

Counting Barretts - Physics Stop

Marcus Wilson Oct 23, 2019

Just in case you don’t have a seven-year-old boy in your house (in which case this will be obvious) a well-known brand of breakfast cereal here in NZ is currently coming with All-Blacks stats cards. Perfect for finding out your favourite rugby player’s height, number of caps, and how much they can eat for breakfast. Buy a family pack and … Read More

The IDI and government data linking - The Dismal Science

Michael Reddell Oct 09, 2018

Browsing on The Treasury’s website the other day, it was the title that caught my eye: “Talkin’ about a revolution”.   I’m rather wary of revolutions.  Even when –  not always, or perhaps even often –  good and noble ideas help inspire them, the outcomes all too often leave a great deal to be desired.   There are various, … Read More

April ’18 – NZ blogs sitemeter ranking - Open Parachute

Ken Perrott May 01, 2018

I notice a few regulars no longer allow public access to the site counters. This may happen accidentally when the blog format is altered. If your blog is unexpectedly missing please check this out. Send me the URL for your site meter and I can correct the information in the database. Similarly, if your blog data in this list seems out … Read More

Anti-fluoridationist Paul Connett misrepresents NZ data - Open Parachute

Ken Perrott Apr 12, 2018

Here is another post in my series critiquing a PowerPoint presentation of Paul Connett – a leading US anti-fluoridation activist. Slide 110 from Paul Connett’s presentation prepared for his planned meeting at Parliament Buildings last February. Paul prepared this for a meeting in New Zealand Parliament buildings last February. Although only three MPs turned up his presentation is important as it … Read More

March ’18 – NZ blogs sitemeter ranking - Open Parachute

Ken Perrott Apr 02, 2018

Image credit: PABLO HELGUERA – Classical Cartoon At Noon: If Wagner Had A Blog I notice a few regulars no longer allow public access to the site counters. This may happen accidentally when the blog format is altered. If your blog is unexpectedly missing please check this out. Send me the URL for your site meter and I can correct the information … Read More

Mary Byrne’s criticism is misplaced and avoids the real issues - Open Parachute

Ken Perrott Mar 14, 2018

First, thanks to Mary Byrne and FFNZ for this response (see Anti-fluoride group coordinator responds to my article). Hopefully, this will help encourage some good faith scientific discussion of the issues involved in my original article (Paul Connett’s misrepresentation of maternal F exposure study debunked). I am pleased to promote such scientific exchange. I will deal with the issues Mary … Read More

Anti-fluoridation campaigners often use statistical significance to confirm bias - Open Parachute

Ken Perrott Dec 06, 2017

Frankly, these days I just get turned off by media reports of studies showing statistically significant relationships as evidence for or against the latest health or other fads. I was pleased to read this Nature article – Five ways to fix statistics – recently as it mirrors my concern at the way statistical analysis is sometimes used to justify or confirm a bias and not … Read More