GCSE Maths Practice: cumulative-frequency

Question 4 of 10

Calculate cumulative frequency for group 4, class 4--6.

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\( \begin{array}{l} \text{The table shows hours spent on homework by students in group 4:} \\ \begin{array}{|c|c|} \hline \text{Hours Spent} & \text{Frequency} \\ \hline 0--2 & 5 \\ 2--4 & 7 \\ 4--6 & 8 \\ 6--8 & 6 \\ \hline \end{array} \\ \text{What is the cumulative frequency for 4--6?} \end{array} \)

Choose one option:

Verify each addition step for correctness.

Sum sequentially including the target class to get cumulative frequency.