The problem provides a table showing the frequency of meals ordered at a restaurant: Sandwich (11), Curry (12), and Salad (7). We need to calculate the central angle (in degrees) that the "Curry" section would occupy if this data were represented on a pie chart.

Probability and StatisticsPie ChartData AnalysisPercentagesFractions
2025/6/8

1. Problem Description

The problem provides a table showing the frequency of meals ordered at a restaurant: Sandwich (11), Curry (12), and Salad (7). We need to calculate the central angle (in degrees) that the "Curry" section would occupy if this data were represented on a pie chart.

2. Solution Steps

First, we need to find the total number of meals ordered.
Total meals = Sandwich + Curry + Salad = 11+12+7=3011 + 12 + 7 = 30
Next, we calculate the fraction of meals that are Curry.
Fraction of Curry = Frequency of CurryTotal meals=1230\frac{\text{Frequency of Curry}}{\text{Total meals}} = \frac{12}{30}
Now, we can find the angle corresponding to the Curry section in the pie chart. A full pie chart has 360 degrees.
Angle of Curry = Fraction of Curry * 360 degrees
Angle of Curry = 1230×360\frac{12}{30} \times 360
Angle of Curry = 12×36030=432030=144\frac{12 \times 360}{30} = \frac{4320}{30} = 144

3. Final Answer

The central angle of the section that represents curry should be 144 degrees.

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