Unformatted text preview: 2. Cumulative frequency diagrams of γ and f c ’ . Determine the quartiles of each variable, the interquartile range, and the quantiles at 0.1 and 0.9 cumulative frequencies. 3. Box plots of γ and f c ’ . Are there any outliers in the data? Do you observe any asymmetry in the distribution of either sample? 4. Scatter plot of f c ’ versus γ. Do you think these two variables are dependent? Describe the nature of the dependence if you observe it. 5. QQ plot of f c ’ versus γ. Do you think these two samples have similar distributions? Please submit your homework by turning in a hard copy. Please provide adequate details in your answers. Graphs alone are not sufficient. Reference [1] Kottegoda, N.T., and R. Rosso (1997). Probability, statistics, and reliability for civil and environmental engineers . McGrawHill, NY, New York....
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 Spring '08
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 Interquartile range, Cumulative distribution function, Compressive strength, Joan Walker

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