Sign Test Example. Signs and the number of signs it is likely that the median is different from the hypothesized value and the null hypothesis should be rejected. For 11 pairs with 9 on one side.
Then choose the default 95 two sided confidence interval. The sign test is an alternative to a one sample t test or a paired t test. You ll see your results immediately.
The sign test is a non parametric test that is used to test whether or not two groups are equally sized.
Time 1 data likert data time 1 time 2 data likert data time 2 library bsda sign test x time 1 y time 2 alternative two sided conf level 0 95 dependent samples sign test s 1 p value 0 03906 p value reported above. The sign test is used when dependent samples are ordered in pairs where the bivariate random variables are mutually independent it is based on the direction of the plus and minus sign of the observation and not on their numerical magnitude. It can be used a in place of a one sample t test b in place of a paired t test or c for ordered categorial data where a numerical scale is inappropriate but where. To analyse these data in statsdirect you must select the sign test from the exact tests section of the analysis menu.
