Use the Range Rule of Thumb to Estimate the Standard $\quad$

Use the range rule of thumb to estimate the standard deviation to the nearest tenth.
-The race speeds for the top eight cars in a 200-mile race are listed below. 188.3 $\quad$ 183.3 $\quad$ 189.2 $\quad$ 181.3 $\quad$ 175.6 $\quad$ 180.9 $\quad$ 183.5 $\quad$ 176.6

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