wilcoxen signed ranks inferential statistics test

when do we use a wilcoxen signed test

for a test of different with a related design and at least ordinal data

step 1 of a wilcoxen test

calculate the difference between the two scores

step 2 of a wilcoxen test

ranking the differences in the data points

what do we do with a 0 difference in a wilcoxen test

ignore and omit the results

step 3 of a wilcoxen test

calculate the sums of ranks of the least frequent sign (+/-) from step 1, this is the observed value of T

what does n refer to in a wilcoxen test

amount of applicable scores

what significance do we automatically use in all statistical test

p<0.05

does the observed value have to be greater than/equal to or less than/equal to the critical value to be significant in a wilcoxen test

less than or equal to