Pie Charts – Why
Most of the times you pick up any report / numbers based article from the media, you will frequently see this animal called “Pie Chart” .
Actually if one thinks of it, Pie Chart is nothing but a polar transformation of a stacked bar chart.
In that sense , a stacked bar chart gives much more visual information than pie chart. Its an empirical observation that most of us are not too comfortable with judging proportions based on the angles in a pie.