Wha about number 11

Question

Wha about number 11

ScanSolve AI Tutor · Accepted Answer

To draw a cumulative frequency curve for the data, you need to plot the upper class boundaries against their corresponding cumulative frequencies.

Identify the upper class boundaries and cumulative frequencies.
From the table, the points to plot are:
- $(110, 0)$ (starting point, as no students have height less than 110 cm)
- $(115, 2)$
- $(120, 16)$
- $(125, 40)$
- $(130, 70)$
- $(135, 86)$
- $(140, 96)$
- $(145, 100)$
Plot these points on a graph.
- Draw a horizontal axis (x-axis) labeled "Height ( $h$ cm)".
- Draw a vertical axis (y-axis) labeled "Cumulative Frequency".
- Choose appropriate scales for both axes. For the x-axis, a scale from 110 to 145 cm would be suitable. For the y-axis, a scale from 0 to 100 would be suitable.
Join the plotted points with a smooth curve.
The curve should start at $(110, 0)$ and generally increase, passing through each of the points identified in Step 1, ending at $(145, 100)$ .

The points to plot for the cumulative frequency curve are:
$\boxed{(110, 0), (115, 2), (120, 16), (125, 40), (130, 70), (135, 86), (140, 96), (145, 100)}$

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