$\begin{array}{c|c}
\text { Weight (oz) } & \begin{array}{c}
\text { Number } \
\text { of Stones }
\end{array} \
\hline 1.2-1.6 & 5 \
1.7-2.1 & 2 \
2.2-2.6 & 5 \
2.7-3.1 & 5 \
3.2-3.6 & 13
\end{array}$

A)
$\begin{array} { c | c }
& \text { Cumulative } \
\text { Weight } ( \mathrm { oz } ) & \text { Frequency } \
\hline \text { Less than } 1.7 & 5 \
\text { Less than } 2.2 & 7 \
\text { Less than } 2.7 & 12 \
\text { Less than } 3.2 & 17 \
\text { Less than } 3.7 & 30
\end{array}$

B)
$\begin{array} { c | c }
\text { Weight (oz) } & \begin{array} { c }
\text { Cumulative } \
\text { Frequency }
\end{array} \
\hline \text { Less than 1.7 } & 5 \
\text { Less than 2.2 } & 7 \
\text { Less than 2.7 } & 12 \
\text { Less than 3.2 } & 17 \
\text { Less than 3.7 } & 28
\end{array}$

C)
$\begin{array} { c | c }
\text { Weight } ( \mathrm { oz } ) & \begin{array} { c }
\text { Cumulative } \
\text { Frequency }
\end{array} \
\hline 1.2 - 1.6 & 5 \
1.7 - 2.1 & 7 \
2.2 - 2.6 & 12 \
2.7 - 3.1 & 17 \
3.2 - 3.6 & 30
\end{array}$

D)
$\begin{array} { c | c }
\text { Weight (oz) } & \begin{array} { c }
\text { Cumulative } \
\text { Frequency }
\end{array} \
\hline \text { Less than } 2.2 & 7 \
\text { Less than } 3.2 & 17 \
\text { Less than } 3.7 & 30
\end{array}$

Question

$\begin{array}{c|c}
\text { Weight (oz) } & \begin{array}{c}
\text { Number } \
\text { of Stones }
\end{array} \
\hline 1.2-1.6 & 5 \
1.7-2.1 & 2 \
2.2-2.6 & 5 \
2.7-3.1 & 5 \
3.2-3.6 & 13
\end{array}$

A)
$\begin{array} { c | c } 
& \text { Cumulative } \
\text { Weight } ( \mathrm { oz } ) & \text { Frequency } \
\hline \text { Less than } 1.7 & 5 \
\text { Less than } 2.2 & 7 \
\text { Less than } 2.7 & 12 \
\text { Less than } 3.2 & 17 \
\text { Less than } 3.7 & 30
\end{array}$

B)
$\begin{array} { c | c } 
\text { Weight (oz) } & \begin{array} { c } 
\text { Cumulative } \
\text { Frequency }
\end{array} \
\hline \text { Less than 1.7 } & 5 \
\text { Less than 2.2 } & 7 \
\text { Less than 2.7 } & 12 \
\text { Less than 3.2 } & 17 \
\text { Less than 3.7 } & 28
\end{array}$

C)
$\begin{array} { c | c } 
\text { Weight } ( \mathrm { oz } ) & \begin{array} { c } 
\text { Cumulative } \
\text { Frequency }
\end{array} \
\hline 1.2 - 1.6 & 5 \
1.7 - 2.1 & 7 \
2.2 - 2.6 & 12 \
2.7 - 3.1 & 17 \
3.2 - 3.6 & 30
\end{array}$

D)
$\begin{array} { c | c } 
\text { Weight (oz) } & \begin{array} { c } 
\text { Cumulative } \
\text { Frequency }
\end{array} \
\hline \text { Less than } 2.2 & 7 \
\text { Less than } 3.2 & 17 \
\text { Less than } 3.7 & 30
\end{array}$

Quizplus · Accepted Answer

The cumulative frequency is the sum of the frequencies up to and including the given weight. In the table, the cumulative frequency for "Less than 1.7" is 5, which is the sum of the frequencies for "1.2-1.6" and "1.7-2.1". The cumulative frequency for "Less than 2.2" is 7, which is the sum of the frequencies for "1.2-1.6", "1.7-2.1", and "2.2-2.6". The cumulative frequency for "Less than 2.7" is 12, which is the sum of the frequencies for "1.2-1.6", "1.7-2.1", "2.2-2.6", and "2.7-3.1". The cumulative frequency for "Less than 3.2" is 17, which is the sum of the frequencies for "1.2-1.6", "1.7-2.1", "2.2-2.6", "2.7-3.1", and "3.2-3.6". The cumulative frequency for "Less than 3.7" is 30, which is the sum of all the frequencies in the table.

A) B) C) D)