1. Who is correct? Professor B is correct. If the average family has 1.8 children then the average child would be expected to have more than 0.8 siblings. 2. Why? The average child is not from the average family. The concepts of average...
1. Who is correct? Professor B is correct. If the average family has 1.8 children then the average child would be expected to have more than 0.8 siblings. 2. Why? The average child is not from the average family. The concepts of average...
I wrote this a few years ago for a departmental newsletter. For some reason the second part (with the answer) never got published. I stumbled across it almost by accident the other day and thought I'd share it. I'll publish the canonical answer in due ...
I recently wrote a review of Understanding psychology as a science: an introduction to scientific and statistical inference by Zoltan Dienes (2008). Dienes' book covers Neyman-Pearson null hypothesis significance testing, Bayesian inference and the lik...
Every time I teach an introductory statistics course I'm struck by how difficult it is to run a simple 2 by 2 chi-square test of independence. SPSS is one of the worst culprits (but even in R it almost seems more trouble than it is worth to use a compu...
This is another quick blog entry related to a query I had today. In my moderated multiple regression workshop a while back I wrote (on slide 15) "don't use standardized regression coefficients". In the talk itself I briefly mentioned why and direct...
As a quick follow-up to my previous post, I'll quickly note some R links specifically aimed at psychologists. Jonathan Baron and Yuelin Li have a excellent set of notes that cover ground from R basics to ANOVA (including repeated measures ANOVA) and ...
I've just presented a talk on at the Statistics for Psychology Students workshop for the HEA Psychology Network in York. Richard Rowe (Psychology, Sheffield) gave an interesting talk on teaching statistics via inquiry based learning. Part of the work i...
