search for: wagenmakers

Dear useRs, French reading people among you might be interested by the following book: Noel, Y. (2013). Psychologie statistique avec R [Statistical psychology with R, in French], coll. PratiqueR, Paris: Springer. http://www.springer.com/psychology/book/978-2-8178-0424-8 This book provides a detailed presentation of all basics of statistical inference for psychologists, both in a fisherian

...me it all looks pretty simple, so I'm not sure where I'm going wrong. For background, the goal of this code is to run a simulation to explore the problem space of inflation of Type I error when decisions to run or not to run more participants are made by preliminary looks at the data (as in Wagenmakers, 2007). This code is meant to examine the problem space given that there is no true difference between the groups (as is the case when both a generated from random draws from the normal distribution). I run an initial number of subjects in two groups (t1N) then, if p is < .25 on the t-test I add...