Some time ago, I wrote on Reddit: There are two errors that I see quite frequently: Conclude from the fact that a statistically significant difference was found to that a significant socially, scientifically or otherwise difference was found. The reason this won’t work is that any minute difference will be stat.sig. if N is large […]

Restriction of range is when the variance in some variable is reduced compared to the true population variance. This lowers the correlation between this variable and other variables. It is a common problem with research on students which are selected for general intelligence (GI) and hence have a lower variance. This means that correlations between […]

A person on ResearchGate asked the following question: How can I correlate ordinal variables (attitude Likert scale) with continuous ratio data (years of experience)? Currently, I am working on my dissertation which explores learning organisation characteristics at HEIs. One of the predictor demographic variables is the indication of the years of experience. Respondents were asked […]

So I found a textbook for learning both elementary statistics much of which i knew but hadnt read a textbook about, and for learning R. book is free legally Numbers refer to the page number in the book. The book is in an early version (“0.4”) so many of these are small errors […]

Two days ago, Blizzard posted some statistical data about the top 200 (really is 199) players in Europe. I did a bit of statistical analysis on that data and made some nice illustrations as seen below. The data is self-explanatory, but the explanation is unknown to me. It need not necessarily be the case that […]

Malintent: 78% of all statistics are completely made up. Wyz_sub10: …but only 31% of all people know that. Smullyan-esque: And 10 out of 9 people just can’t understand statistics at all. Deleet: Priceless! Kilde