Bonferroni Correcting Lots of Correlations

omeone posed me this question: Some of my research, if not all of it (:-S) will use multiple correlations. I’m now only considering those correlations that are less than .001. However, having looked at bonferroni corrections today – testing 49 correlations require an alpha level of something lower than 0.001. So essentially meaning that correlations […]

Categories: Big Data, MentorSpace, Quantitative

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SPSS is not dead

This blog was published recently showing that the use of R continues to grow in academia. One of the graphs (Figure 1) showed citations (using google scholar) of different statistical packages in academic papers (to which I have added annotations). Figure 1: Citations of stats packages (from http://blog.revolutionanalytics.com/2012/04/rs-continued-growth-in-academia.html)   At face value, this graph implies […]

Categories: Big Data, Quantitative

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TwitterPanic, NHST, Wizards, and the Cult of Significance Again

****Warning, some bad language used: don’t read if you’re offended by that sort of thing**** I haven’t done a blog in a while, so I figured I ought to. Having joined Twitter a while back, I now find myself suffering from TwitterPanic™, which is an anxiety disorder (I fully anticipate to be part of DSM-V) […]

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Factor Analysis for Likert/Ordinal/Non-normal Data

My friend Jeremy Miles sent me this article by Basto and Periera (2012) this morning with the subject line ‘this is kind of cool’. Last time I saw Jeremy, my wife and I gatecrashed his house in LA for 10 days to discuss writing the R book that’s about to come out. During that stay […]

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Newspapers and 7 Core Statistical Concepts

There have been a few news stories recently about misunderstanding of statistics; especially confusing correlation with cause. For example, the Guardian ran this story/tutorial (http://t.co/AwCugVIV). Hot on the heels of that useful reminder, came a story linking unemployment in the UK to immigration from outside of the EU (http://t.co/7rTcFvbH). By the time the Daily Mail […]

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