The Following Data Represent the Salaries (In Thousands of Dollars)

Essay

The following data represent the salaries (in thousands of dollars) of a sample of 13 employees of a firm: $\begin{array}{|l|l|l|l|l|l|l|}\hline 26.5 & 23.5 & 29.7 & 24.8 & 21.1 & 24.3 & 20.4 \\\hline 22.7 & 27.2 & 23.7 & 24.1 & 24.8 & 28.2 & \\\hline\end{array}$ Compute the variance and standard deviation of the salaries.