The article "Determination of Most Representative Subdivision" (J. of Energy Engr., 1993: 43–55) gave data on various characteri

Question

2 years ago

7

The article "Determination of Most Representative Subdivision" (J. of Energy Engr., 1993: 43–55) gave data on various characteri

stics of subdivisions that could be used in deciding whether to provide electrical power using overhead lines or underground lines.
Here are the values of the variable x =total length of streets within a subdivision:

1280 5320 4390 2100 1240 3060 47701050 360 3330 3380 340 1000 9601320 530 3350 540 3870 1250 2400960 1120 2120 450 2250 2320 24003150 5700 5220 500 1850 2460 58502700 2730 1670 100 5770 3150 1890510 240 396 1419 2109

(a) Construct a stem-and-leaf display using the thousands digit as the stem and the hundreds digit as the leaf, and comment on the various features of the display.
(b) Construct a histogram using class boundaries 0, 1000, 2000, 3000, 4000, 5000, and 6000. What proportion of subdivisions have total length less than 2000? Between 2000 and 4000? How would you describe the shape of the histogram?

Mathematics

1 answer:

spin [16.1K] · Answer 1 · 2022-07-25T01:54:45+03:00

Answer:

Step-by-step explanation:

The stem and leaf would be like this.

Stem Leaf

10 0

11

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24 0

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34 0

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36 0

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39 6

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45 0

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50 0

51 0

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53 0

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96 0 0

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100 0

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105 0

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112 0

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124 0

125 0

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128 0

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141 9

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185 0

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210 0 9

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212 0

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225 0

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232 0

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240 0 0

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246 0

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306 0

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333 0

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335 0

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387 0

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439 0

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477 0

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522 0

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532 0

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570 0

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577 0

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585 0

b) Histogram

<2000 there are 23

Proportion is 0.4893

Between 2000 and 4000 there are 10+7 = 17

Proportion = 0.3617

Is in enclosed file