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    Geometric standard error of the mean

    Dear forum members, I wonder if anyone can share with me a formula for calculating geometric (multiplicative) standard error of the mean based on original values and (separately) on geometric standard deviation. Unfortunately, the definition of SEM* in the attached article (Table 2) does not...
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    Sample Estimate expression in Brunner-Muenzel test with R (lawstat)

    Dear Talk Stats Community, I try to provide a reasonable interpretation of Sample Estimate expression P(X<Y) + .5*P(X=Y), which is shown as an output for BM-test in R (lawstat package). I am confused with the relationship between the following three probabilities: P(X<Y), P(X>Y), P(X=Y)...
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    Advantages and disadvantages of data transformation and rank-based tests

    Dear Talk Stats Community, I would like to learn about advantages and disadvantages of transforming non-normally distributed data to achieve normal distribution versus using ranks and subsequent non-parametric tests. With assigning ranks to individual values, we lose some information. With...
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    High significance of correlation coefficient with small sample size

    Dear forum members! A few years ago Guillaume Rousselet posted results of his helpful study titled "Small n correlations cannot be trusted" here: https://garstats.wordpress.com/2018/06/01/smallncorr/. It clearly shows the effect of small sample size on reproducibility of correlation data. From...
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    Commas in a vector not accepted

    I seek for advice as to how to overcome a following bug. R3.1.1 (windows) has trouble with accepting commas when I try to enter a vector "vector<-(1,2,3,4,5)". In fact, it does not accept any delimiter, giving an error message like this: unexpected ',' in "vector<-(1,". The trouble appeared a...