Use the Range Rule of Thumb to Estimate the Standard $\begin{array}{llllllll}181.0 & 180.6 & 189.2 & 182.2 & 175.6 & 180.0 & 177.9 & 181.8\end{array}$

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. $\begin{array}{llllllll}181.0 & 180.6 & 189.2 & 182.2 & 175.6 & 180.0 & 177.9 & 181.8\end{array}$

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