Figure 1.
Some normal and gamma distributions: (a) PDF's for Gam(0.5, 1,−0.5) and N(0, 0.707); (b) PDF's for Gam(1, 1, −1) and N(0, 1); (c) PDF's for Gam(2, 1, −2) and N(0, 1.414); and (d) PDF's for Gam(4, 1, −4) and N(0, 2), [31].
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