Practice 3 Question 11 of 20 (1 point) | Question Attempt: 1 of 1 9 \( \checkmark 10 \) 11 12 13 14 15 16 17 18 19 20 Suspension Bridges The lengths (in feet) of the main span of the longest suspension bridges in the United States and the rest of the world are shown below. Which set of data is more variable? United States 4205 4200 3800 3500 3478 2800 2800 2310 World 6570 5538 5328 4888 4626 \( 4544 \quad 4518 \quad 3970 \) Send data to Excel Part: 0 / 2 Part 1 of 2 Calculate the coefficient of variation. Round your answers to at least two decimal places. U.S. bridges CVar : \( \square \) \% World bridges CVar : \( \square \) \%
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United States: Mean = (4205 + 4200 + 3800 + 3500 + 3478 + 2800 + 2800 + 2310) / 8 World: Mean = (6570 + 5538 + 5328 + 4888 + 4626 + 4544 + 4518 + 3970) / 8 Show more…
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The lengths (in feet) of the main span of the longest suspension bridges in the United States and the rest of the world are shown below. Which set of data is more variable? United States $4205,4200,3800,3500,3478,2800,2800,2310$ World $\quad 6570,5538,5328,4888,4626,4544,4518,3970$
Marc L.
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Measures of Variation
Find the variance and standard deviation for the five states with the most covered bridges: Oregon: 106 Vermont: 121 Indiana: 152 Ohio: 234 Pennsylvania: 347 2. 2. Find the variance and standard deviation of the heights of five tallest skyscrapers in the United States: Sears Tower (Willis Building): 1450 feet Empire State Building: 1250 feet One World Trade Center: 1776 feet Trump Tower: 1388 feet 2 World Trade Center: 1340 feet 3. Find the variance and standard deviation of the scores on the most recent reading test: 7.7, 7.4, 7.3, and 7.9 4. 4. Find the variance and standard deviation of the highest temperatures recorded in eight specific states: 112, 100, 127, 120, 134, 118, 105, and 110.
David N.
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