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hw_2 - 2 standard deviation about 96-2.061 2.143 3 standard...

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Statistics Problem Set 2 September 26, 2011 Problem 1 a. This histogram is great for figuring out the distribution of the data which is concentrated mostly between 0 and 1. You cannot see individual data in this graph. The data distribution is not exact since the bars are wide. b. Descriptive Statistics: C1 Variable N N* Mean SE Mean StDev Minimum Q1 Median Q3 C1 100 0 0.041 0.105 1.051 -2.611 -0.761 0.140 0.787 Variable Maximum C1 2.109 c. The mean and median are relatively close to each other. d. 1 standard deviation about 76% (-1.01,1.092)
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Unformatted text preview: 2 standard deviation about 96% (-2.061, 2.143) 3 standard deviation about 100% (-3.112, 3.194) According to the Empirical Rule. . e. X+-s about 68% X+-2s about 95% X+-3s about 99.7% The data resembles more the empirical rule because of the structure and distribution of the measurements. Chebyshevs Rule says no useful information is provided on the measurements within a standard deviation. That is clearly not the case in this data set....
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