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2-4 example8 - Student Grady Simonton Course Math119...

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Unformatted text preview: Student: Grady Simonton Course: Math119: Elementary Statistics - Spring 2.010 - CRN: 49239 Instructor: Shawn Parvini - 16 weeks Date: 2/18/10 Book: Triola: Elementary Statistics, 11e Time: 11:11 ANI In a recent year, 5400 people were killed while working. Here is a breakdown I Combustibles (C) of causes: combustibles (2350); substances (800); transportation (750); I Substances (S) equipment (700); violence (650); falls (150). Use the data to construct a D TraITSpmation (T) Pareto chart. Compare the Pareto chart to the pie chart. Which graph is more effective in showing the relative importance of the causes of work-related deaths? El Equlpment (E) A Pareto chart is a bar graph for qualitative data, with the bars arranged in order according to frequencies. Vertical scales in Pareto charts can represent frequencies or relative frequencies. The tallest bar is at the left, and the smaller bars are farther to the right. Start by arranging the frequencies in order from largest to smallest with the corresponding cause of work-related death. Cause Of Frequencies Cause Of Frequencies Work-related death Work-related death Combustibles (C) 2350 Substances (S) 800 Transportation (T) 750 Equipment (E) 700 Violence (V) 650 Falls (F) 150 Use the chart above to construct a Pareto chart. The tallest bar is at the left, and the smaller bars are farther to the right. 2500 2000 1500 1000 500 A Pareto chart is designed to emphasize a few large classes of data, while a pie chart is useful for contrasting several classes of data that are approximately equal. By arranging the bars in order of frequency, the Pareto chart focuses attention on the more important categories. Therefore, the Pareto chart is more effective in showing the relative importance of the causes of work-related deaths. Page 1 ...
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