For the Following Set of Data Representing Basketball Shots Made

Short Answer

For the following set of data representing basketball shots made in one minute, calculate the standard deviation.
$$\begin{array} { | l | l | l | } \hline \boldsymbol { X } & \boldsymbol { f } & \\\hline & & - \\\hline 29 & 3 & X = 24.16 \\\hline 27 & 2 & \\\hline 26 & 4 & \\\hline 25 & 10 & \\\hline 24 & 13 & \\\hline 23 & 7 & \\\hline 22 & 7 & \\\hline 21 & 2 & \\\hline 20 & 1 & \\\hline\end{array}$$