Thelma says that she assumes a circle graph is appropriate when the data are percentages. Provide a counterexample that demonstrates her “rule of thumb” is not always correct.
COUNTEREXAMPLE THAT DEMONSTRATES THAT A CIRCLE GRAPH IS NOT APPROPRIATE IN SOME CASES:
Cosider a data of percentages with more than 15 slices: For example to show the areas of different cities in a region (where the number of cities is more than 15. In showing this data with circle graph is very cumbursome and also it does not give the correct imformation to the viewer. A circle graph with 4 or 5 slices will give the viewer a sense of the data in a single glance. In such large slices, better way of presentation is by bar charts.
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