Sign Test Table Of Critical Values. If n 25 use table a 2. 5 calculate the test statistic.
X x is the critical value for the sign test for the significance level provided and the type of tails specified. N total number of and signs. Denote the total number of signs by n ignore the zero sign and the number of less frequent signs by s.
Sign test in case of large sample.
Z frac x 0 5 n 2 sqrt n 2 z n. Appendix 1 statistical tables statistical table 4 1probabilities associated with values as extreme as observed values of z in the normal distribution. To determine the appropriate critical value we need the sample size or number of matched pairs n 12 and our two sided level of significance α 0 05. Statistical table 7 1critical one and two tailed values of x for a sign test.
