If you turn the CD/DVD lable side down on a rough stone or equivalent and by rubbing back / forwards / side to side untill you get to clear polycarbonate then it is reasonably certain the data spiral has been removed. If you need to do it very quickly then one third fill a glass o...
Also, the effect size can be converted to point-biserial correlation (mathematically equivalent to the Pearson’s product moment correlation). weat_es(sw, r = TRUE) #> [1] 0.4912066 Exact test The exact test described in Caliskan et al. (2017) is also available. But it takes a long tim...