A Summary Measure That Is Computed from a Population Is

A summary measure that is computed from a population is called: $\begin{array}{|l|l|}\hline\text { A. } & \text {a parameter. }\\\hline \text { B. } & \text {a statistic. } \\\hline \text { C. } &\text {a sample. }\\\hline \text { D. } &\text { All of these choices are correct.}\\\hline\end{array}$