Which of the Following Are Involved in Statistical Inference

Short Answer

Which of the following are involved in statistical inference? $\begin{array}{|l|l|}\hline A&\text {How to cal culate relevant statistics. }\\\hline B&\text { When to apply a statistical technique.}\\\hline C&\text {Why statistical methods are used. }\\\hline D&\text {All of these choices are correct. }\\\hline \end{array}$