Use the Range Rule of Thumb to Estimate the Standard $$\begin{array} { l l l l l l l l } 188.8 & 183.0 & 189.2 & 182.1 & 175.6 & 184.6 & 178.3 & 179.4\end{array}$$

Multiple Choice

Use the range rule of thumb to estimate the standard deviation. Round results to the nearest tenth.
-The race speeds for the top eight cars in a 200-mile race are listed below.
$$\begin{array} { l l l l l l l l } 188.8 & 183.0 & 189.2 & 182.1 & 175.6 & 184.6 & 178.3 & 179.4\end{array}$$

A) 7.5
B) 3.4
C) 6.8
D) 1.1