Which of the Following Best Describes When to Apply the Friedman

Short Answer

Which of the following best describes when to apply the Friedman test to determine whether the locations of two or more populations are the same? $\begin{array}{|l|l|}\hline A&\text {The populations must be normally distributed. }\\\hline B&\text {The sample sizes must be at least 30 . }\\\hline C&\text {The data must be generated from a randomised block experiment. }\\\hline D&\text { All of these choices are correct.}\\\hline \end{array}$