In the sign test for paired differences,the test statistic S has a:
A)binomial distribution with P = 0.5.
B)normal distribution.
C)chi-square distribution.
D)Poisson distribution.

Question

Quizplus · Accepted Answer

The sign test for paired differences is a non-parametric test used to determine whether the median of the differences between two paired samples is zero or not. The test statistic S is the number of pairs where the second value is greater than the first value. Under the null hypothesis that the median difference is zero, S follows a binomial distribution with P = 0.5. Therefore, the best choice is A.

In the Sign Test for Paired Differences,the Test Statistic S