Sign Test Table Of Critical Values. Because s 8 is between the two critical values s 1 and s 9 we fail to rejection the null hypothesis at a 0 05. Table a 7 critical values for the sign test a 005 01 025 05 one tail one tail one tail one tail 01 02 05 10 n two tails two tails two tails two tails 1 2 3 4 5 0 6 0 0 7 0 0 0 80 0 0 1 90 0 1 1 10 0 0 1 1 11 0 1 1 2 12 1 1 2 2 13 1 1 2 3 14 1 2 2 3 15 2 2 3 3 16 2 2 3 4 17 2 3 4 4 18 3 3 4 5 19 3 4 4 5 20 3 4 5 5.
4 determine the critical value. Denote the total number of signs by n ignore the zero sign and the number of less frequent signs by s. X x is the critical value for the sign test for the significance level provided and the type of tails specified.
If n 25 use table a 2.
If n 25 use x. Critical values for the sign test ctd n 01 02 05 10 51 15 18 19 20 52 16 18 19 21 53 16 18 20 21 54 17 19 20 22 55 17 19 20 22 56 17 20 21 23 57 18 20 21 23 58 18 21 22 24 59 19 21 22 24 60 19 21 23 25 61 20 22 23 25 62 20 22 24 25 63 20 23 24 26 64 21 23 24 26 65 21 24 25 27. If the sample size is large enough a formula for a z statistic can be used and it is. 5 calculate the test statistic.
