Sign Test Table Value. The third table will show the test statistics table for sign test. 1 df rows 1 columns 1 2 for a one tailed test for 2 2 tables only i e when df 1 divide the probabilities at the top of the table by 2.
The sign test like the wilcoxon signed ranks test is a non parametric alternative to the repeated measures t test. Mcgraw hill 1969 as quoted in johnson. Z frac x 0 5 n 2 sqrt n 2 z n.
For example if the probability value is less than the significance level at 05 null hypothesis will be rejected.
Introduction to statistical analysis 3rd ed. Z frac x 0 5 n 2 sqrt n 2 z n. If n 25 use table a 2. Where x is the smaller number of and signs and n is the sample size.
