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 Form 3 Geography: Statistical Methods online lessons

Disadvantages of using proportional circles to represent statistical data

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Answer Text:
Disadvantages of proportional circles.
1. Tedious in calculation and measurement of angles
2. Actual values represented by each component cant be known at a glance
3. Difficult to accurately measure and draw sectors whose values are too small.
4. Comparison can be difficult if the circles represent values which are almost equal.