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Explaining Normal Quantile ... - Statistics Department
distribution that de nes the y-axis; choices include a normal distribution, the shown gamma distribution (with shape parameter 3), a beta distribution, t-distributions (with 3 and 6 degrees of freedom), and a mixture of a normal and gamma. 3 Empirical QQ plots Applying this analogy to the normal QQ plot of data requires more work and imagina-
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