The Following Frequency Distribution Presents the Weights in Pounds (Lb)What Is the Class Width?
A)7
B)8
C)64
D)9

The following frequency distribution presents the weights in pounds (lb) of a sample of visitors to a health clinic.
$$\begin{array} { c c } \hline \text { Weight (lb) } & \text { Frequency } \\\hline 130 - 137 & 3 \\138 - 145 & 2 \\146 - 153 & 8 \\154 - 161 & 3 \\162 - 169 & 5 \\170 - 177 & 9 \\178 - 185 & 5 \\186 - 193 & 2 \\\hline\end{array}$$ What is the class width?

A)7
B)8
C)64
D)9

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