Use a bar chart to compare different students' marks in one term, a line chart to show how your own marks change over several terms, and a pie chart only when you must show how one single exam total breaks into portions, like theory versus practical. I say this from correcting my students' project charts. But honestly, a pie chart? In my life, we rarely have a perfect 'whole' that sits still to be divided; life is more like that jagged line chart of my savings after my ben's surgery—always moving, never a neat circle.
#money#salary
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