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feed.xml
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<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/">
<channel>
<title>free range statistics</title>
<description>I write about applications of data and analytical techniques like statistical modelling and simulation to real-world situations. I show how to access and use data, and provide examples of analytical products and the code that produced them.</description>
<link>https://freerangestats.info</link>
<atom:link href="https://freerangestats.info/feed.xml" rel="self" type="application/rss+xml" />
<item>
<title>Revisiting depression incidence by county and vote for Trump</title>
<description>I expand on my last post, to see if the relationship between depression and voting for Trump at county-level persists when you control for the racial composition of counties (it doesn't).</description>
<pubDate>Fri, 03 Jan 2025 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2025/01/03/depression-and-vote-again</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2025/01/03/depression-and-vote-again</guid>
</item>
<item>
<title>Depression incidence by county and vote for Trump</title>
<description>Multi-level modelling with spatial auto-correlation! I look at county level data on incidence of depression in 2020, and voting for Trump in the 2024 US Presidential election, and conclude that there's something there, but of course there are lots of potential explanations of what is behind the relationship.</description>
<pubDate>Mon, 23 Dec 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/12/23/depression-and-vote</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/12/23/depression-and-vote</guid>
</item>
<item>
<title>Death rates by cause of death</title>
<description>I explore death rates by cause of death with OECD data, for the USA and other countries. Causes of death that are relatively high in the USA include assaults, accidents, suicides; diseases of the nervous systems (including Alzheimer's); and diseases of the circulatory system (including heart attacks).</description>
<pubDate>Sat, 14 Dec 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/12/14/us-death-rates</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/12/14/us-death-rates</guid>
</item>
<item>
<title>Simulating Ponzi schemes</title>
<description>I write a function to simulate Ponzi schemes with various types of 'investor' growth, withdrawal rates, and extraction by the scammer / owner of the scheme.</description>
<pubDate>Sat, 30 Nov 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/11/30/ponzi-schemes</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/11/30/ponzi-schemes</guid>
</item>
<item>
<title>Design effects for stratified sub-populations</title>
<description>I look at the two different sorts of design effects that Stata will report for estimates from sub-populations of a complex survey, which vary depending on whether or not the hypothetical simple random sample we are comparing the complex survey to has the same sub-population sample sizes as the actual sample.</description>
<pubDate>Sat, 16 Nov 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/11/16/design-effects</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/11/16/design-effects</guid>
</item>
<item>
<title>Regressions where the coefficients are a simplex.</title>
<description>I compare some different ways of forcing the coefficients in a regression to form a simplex, all greater than zero and adding up to exactly one. Two methods - quadratic programming, and explicit modelling of the coefficients from a Dirichlet distribution - give essentially identical results that match the data generating process well.</description>
<pubDate>Wed, 06 Nov 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/11/06/simplex-regression-coefficients</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/11/06/simplex-regression-coefficients</guid>
</item>
<item>
<title>Git, peer review, tests and toil</title>
<description>I was honoured to give the third and final Ihaka Lecture in the 2024 series. My talk had the theme "Making R work in government".</description>
<pubDate>Sat, 28 Sep 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/09/28/ihaka-lecture</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/09/28/ihaka-lecture</guid>
</item>
<item>
<title>Prime numbers as sums of three squares.</title>
<description>I explore the number of ways to make a prime number as the sum of squares of three positive integers.</description>
<pubDate>Sat, 21 Sep 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/09/21/primes-squares</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/09/21/primes-squares</guid>
</item>
<item>
<title>Stepwise selection of variables in regression is Evil.</title>
<description>Stepwise variable selection is bad and dangerous, and you shouldn't do it. It increases false positives. It drops variables that should be in the model. It gives biased estimates for regression coefficients. The problems are worse for smaller samples; higher correlation between the X variables; and models with weaker explanatory power for the y (i.e. lower R-squared).</description>
<pubDate>Sat, 14 Sep 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/09/14/stepwise</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/09/14/stepwise</guid>
</item>
<item>
<title>Gender and sexuality in Australian surveys and census</title>
<description>I familiarise myself with the Australian Bureau of Statistics' statistical Standard on sex and gender, and play around with some data from the Australian General Social Survey that has outputs reported by persons' sexual orientation.</description>
<pubDate>Sun, 08 Sep 2024 00:00:00 +0800</pubDate>
<link>https://freerangestats.info/blog/2024/09/08/sex-gender</link>
<guid isPermaLink="true">https://freerangestats.info/blog/2024/09/08/sex-gender</guid>
</item>
</channel>
</rss>