Use the range rule of thumb to approximate the standard deviation.The race speeds for the top eight cars in a 200-mile race are listed below. Round results to the nearest tenth.188.5 188.6 189.2 187.2 175.6 178.5 176.8 185.4
A. 3.4
B. 1.1
C. 6.8
D. 7.5
Answer: A
Mathematics
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