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Course: BMSI 322, Fall 2009
School: SUNY Albany
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3: Chapter Numerical Data A single death is a tragedy, a million deaths is a statistic. - Joseph Stalin Box and whisker plot Five number summary used to display extreme values (outliers), center and spread. Empirical Rule: For mound shaped distributions: 1) Approximately 70% (if symmetric) of the sample will fall between X s Approximately 90% (if skewed) of the sample will fall between X s 2) Approximately 95%...

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3: Chapter Numerical Data A single death is a tragedy, a million deaths is a statistic. - Joseph Stalin Box and whisker plot Five number summary used to display extreme values (outliers), center and spread. Empirical Rule: For mound shaped distributions: 1) Approximately 70% (if symmetric) of the sample will fall between X s Approximately 90% (if skewed) of the sample will fall between X s 2) Approximately 95% (if symmetric) of the sample will fall between X 2s Approximately 100% (if skewed) of the sample will fall between X 2s 3) Approximately 100% (if symmetric) of the sample will fall between X 3s Example 1: A salesman has the following household income statistics on two neighborhoods: Statistics Neighborhood 1 Neighborhood 2 Mean \$78,000 \$72,000 Median \$65,000 standard \$73,000 deviation \$16,000 \$6,000 In which neighborhood should the salesman invest more time in going from house to house? In which neighborhood is the salesman more likely to find outstandingly wealthy families? Example 2: The average annual returns for two stock portfolios are given below: A = {1%, 5%, 6%, 7%, 11%} B = {1%, 3%, 6%, 9%, 11%} Which portfolio would you prefer and why? Example 3: The average return on stocks has been 11% historically and the a...

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SUNY Albany - BMSI - 322
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Notes By: Pepper
Notes By: Pepper
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