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2.2C-Qualitative Displays

2.2C-Qualitative Displays. PIE CHARTS Circular display of frequency of categories of data Determine relative frequency of each category (f/n) Multiply relative frequency by 360 to find degrees of central angle of sector Move decimal of relative frequency 2 places to right determine the %

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2.2C-Qualitative Displays

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  1. 2.2C-Qualitative Displays • PIE CHARTS • Circular display of frequency of categories of data • Determine relative frequency of each category (f/n) • Multiply relative frequency by 360 to find degrees of central angle of sector • Move decimal of relative frequency 2 places to right determine the % • Label EACH sector with category & %

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  9. Pareto Chart • Vertical Bar Graph • Qualitative categories on x-axis • Measured values or frequencies on y-axis • Bars in DECREASING order • TALLEST bar FIRST, down to shortest • Frequently used in business

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  12. Assignment • 2.2C p. 53 # 22-25, 31,32

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