1. Find midpoints
2. Plot points at the midpoints on the graphs
3. Join each point together to make a straight line between points.
- Midpoint = (lowest integer + highest integer) / 2
e.g 10<t<14 (10+14)/2 = 12 = midpoint
- When drawing a frequency polygon on a graph with no axis make sure the frequency is ALWAYS on the y axis
- If drawing a histogram on the same graph, the frequency polygon touches the tops of the bars.
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