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Pie Chart
  • 时间:2024-11-03

Statistics - Pie Chart


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A pie chart (or a pie graph) is a circular statistical graphical chart, which is spanided into spces in order to explain or illustrate numerical proportions. In a pie chart, centeral angle, area and an arc length of each spce is proportional to the quantity or percentages it represents. Total percentages should be 100 and total of the arc measures should be 360° Following illustration of pie graph depicts the cost of construction of a house.

Cost of construction of a house.

From this graph, one can compare the sum spent on cement, steel and so on. One can also compute the actual sum spent on each inspanidual expense. Consider an example, where we want to know how much more is the labour cost when compared to cost of steel.

$ { Amount spent on labor = frac{90}{60} imes 600000 = $ 150000 \[7pt] Sum spent on steel = frac{54}{360} imes 600000 = $ 90000 \[7pt] Excess = 150000 - 90000 = $ 60000 \[7pt] Let 60000=x\% of 600000. \[7pt] imppes frac{x}{100} imes 600000 = $ 60000. \[7pt] imppes x = 10\% of total expense. } $ Advertisements