For example, you can test whether the mean output from the controlled
improved process is different from the pre-project mean. To see an example, go
Example of 1-Sample Wilcoxon.
Your data must be a continuous value for Y (output). The data should come
from a symmetric distribution, such as the uniform or
Cauchy distributions. If your data do not come from
a symmetric distribution, use a 1-sample sign test. For more details, go to
Data considerations for 1-Sample