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→Comparing Means
:#To rank whole combined observations of two groups
:#To separate back the ranks into two groups
:#To look up ''critical range'' relevant to both numbers of observations and whether '''the sum of ranks''' in '''the group of smaller number of observation'''is outside the range or not::if outside the range, p-value is smaller than designated
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*'''Wilcoxon signed rank test'''
:#To calculate differences between pairs and discard 0 differences:#To rank the absolute values of differences (ignoring 0):#To make sums of ranks of positive difference and ranks of negative differences:#To look up '''critical value''' relevant to '''the smaller sum of rank'''
::here 'signed' means 'take into account signs of differences of paired data'
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