The Supervisor Had to Select a New Aircraft Controller (Who

Essay

The supervisor had to select a new aircraft controller (who watches planes on radar and gives instructions). The task requires sustained vigilance. Some selection had already been accomplished and of the three remaining applicants the most reliable was to be chosen. In a sample of their proficiency, the following reaction times were found. Calculate statistics that allow you to choose the most consistent applicant. Scores are in seconds. $$\begin{array} { c c c } \text { Applicant A } & \text { Applicant B } & \text { Applicant C } \\\hline 1.4 & 1.3 & 1.5 \\2.6 & 2.7 & 2.5 \\1.7 & 1.6 & 1.8 \\3.4 & 3.5 & 3.3\end{array}$$