Listed Below Are the Arrival Delay Times (In Minutes) of Randomly

question 169

Essay

Listed below are the arrival delay times (in minutes) of randomly selected flights between New York's JFK
airport to Los Angeles (LAX). Negative values correspond to flights that arrive before their schedule time and
positive values represent delays. Calculate the range of the data and the standard deviation. Can the standard
deviation be negative? $$\begin{array} { l l l l l l l l } - 15 & - 18 & - 32 & - 21 & - 9 & - 32 & 11 & 2\end{array}$$