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10 cards from this deck
Size of each pie chart is proportional to group size.
Use the formula: R²/r² = N/n.
The ratio is 16:9 based on R^2:r^2.
90° represents 1/4 or 25% of the total 360°.
Equal angles do not mean equal numbers of people.
Number = (72/360) * 200 = 40 people.
N = 450 people using R²/r² = N/n.
It represents a larger sample size.
Use actual numbers, not just angles.
Number = (72/360) * 450 = 90 people.
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