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Professor Andy Field's Blog – April 2012 Archive (3)

Bonferroni correcting lots of correlations

Someone 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 have to be significant at .000. Am I correct on this? The calculator that I am using from the…


Added by Professor Andy Field on April 25, 2012 at 9:31 — 4 Comments

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).…


Added by Professor Andy Field on April 14, 2012 at 9:47 — 5 Comments

One-Tailed Tests

I’ve been thinking about writing a blog on one-tailed tests for a while. The reason is that one of the changes I’m making in my re-write of DSUS4 is to alter the way I talk about one-tailed tests. You might wonder why I would want to alter something like that – surely if it was good enough for the third edition then it’s good enough for the fourth? Textbook writing is quite an interesting process because when I wrote the first edition, I was very much younger, and to some extent the content…


Added by Professor Andy Field on April 2, 2012 at 10:36 — 5 Comments

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