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204 2.2%2c2.3 Quantitative Displays

204 2.2%2c2.3 Quantitative Displays - with a rate of return...

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2.2 Quantitative Displays Acerage of 39 national parks under 800,000 acres(in 1,000s of acres) 41 66 233 775 169 36 338 247 236 64 183 61 13 308 77 520 77 27 217 5 650 462 106 52 67 505 94 75 265 402 196 70 132 28 220 760 143 46 539 Frequency Tables Acres(1,000s) Frequency 0-99 17 100-199 6 200-299 6 300-399 2 400-499 2 500-599 3 600-699 1 700-799 2 Histograms National Park Acerage <800,000 0 5 10 15 20 0- 99 100- 199 200- 299 300- 399 400- 499 500- 599 600- 699 700- 799 Acerage Frequency Series1 Problem 2.27 Histogram 0 5 10 15 2 4 6 8 10 12 14 Minutes Frequency Frequency
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Stem and Leaf Displays Semiconductor failure (breaking stress) 1 4 31 43 47 50 51 51 58 59 62 63 66 71 75 88 113 0 14 1 2 3 1 4 37 5 01189 6 236 7 15 8 8 9 10 11 3 double stem display 12 32 27 18 51 41 36 25 40 21 24 20 29 26 19 38 34 11 27 25 33 45 49 32 23 16 39 27 28 23 22 25 34 19 55 24 26 1 12 1 6899 2 0123344 2 5556677789 3 22344 3 689 4 01 4 59 5 1 5 5
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2.3 More Quantitative Displays Frequency Polygons The vertical scale is the number Of data values (frequency) in a specific interval. For
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Unformatted text preview: with a rate of return in the interval 0 → 5% 2.3 problem 21 5 year rates of return of financial stocks (Ending March 4 2004) Frequency Polygon 1 2 3 4 5 6 7 8 9---2.5 7.5 12.5 17.5 22.5 27.5 32.5 Interval Midpoints (% rate of return) Ogives Ogives represent the cumulative frequency or cumulative relative frequency; that is the vertical scale represents is less than or equal to the horizontal value. For example for the graph below approximately 80% of the stocks had rates of return less than or equal to 20%. Cumulative Percentage Polygon 0% 20% 40% 60% 80% 100% 120% 5 10 15 20 25 30 35 Percent Return On Investment (right end points of intervals)...
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