# Chapter 10 - Statistics - Review Exercises: 28

257.33

#### Work Step by Step

$mean=\frac{243\times1+247\times3+251\times5+255\times7+263\times4+271\times2+279\times2}{1+3+5+7+4+2+2}$ $mean=\frac{243+741+1255+1785+1052+542+558}{24}$ $mean=\frac{6176}{24} =257.333333333333333$ We can round this result to the nearest hundredth, which is 257.33

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