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STA2023 Project.docx

Assume that there are no outliers in the given data

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of the data. Assume that there are no outliers in the given data and use the Normal Quantile Plot  to make your conclusions. To create a Normal Quantile Plot, use PART 2 Manual Construction  of Normal Quantile Plots (page 277-278) procedure. Then use EXCEL to generate the scatterplot for the NORMAL QUANTILE PLOT. EARTHQUAKE DEPTHS. Tom randomly collected a sample of depths (km) of  earthquakes: 7.1, 6.9, 7.5, 10.0, 8.1, 6.8 a) Complete the following table with the computation results using PART 2 Manual  Construction of the Normal Quantile Plot of the earthquake depths. Earthquake Depths Cumulative Left Areas Z scores 6.8 km .2266 -0.75 6.9 km .2514 -0.67 7.1 km .3085 -0.50 7.5 km .4325 -0.17 8.1 km .6293 0.33 10.0 km .9726 1.92
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Page | 5 b) Normal Quantile Plot for earthquake depths: 6.5 7 7.5 8 8.5 9 9.5 10 10.5 -1 -0.5 0 0.5 1 1.5 2 2.5 Earthquake Depths Z score c) Does the sample of earthquake depths (km) appear to come from a normally distributed  population? Explain in detail how you got to your conclusion using the above plot. Yes, because all of the plotted points on the normal quantile data plot lie on a straight diagonal  line.
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  • Fall '08
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