File:Inverse gamma cdf.png
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Cumulative distribution function for the Inverse-gamma distribution
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gnuplot source under GPL:
dinvgamma(x,a,b) = exp(a*log(b) - lgamma(a) - (a+1)*log(x) - b*1.0/x) pinvgamma(x,a,b) = 1 - igamma(a, b*1.0/x)
set xtics 0,0.5 set ytics 0,0.5 set samples 1001 set terminal postscript enhanced color solid lw 2 "Times-Roman" 27 set output plot [0:3] \ pinvgamma(x,1,1) title "{/Symbol a} = 1, {/Symbol b} = 1", \ pinvgamma(x,2,1) title "{/Symbol a} = 2, {/Symbol b} = 1", \ pinvgamma(x,3,1) title "{/Symbol a} = 3, {/Symbol b} = 1", \ pinvgamma(x,3,.5) title "{/Symbol a} = 3, {/Symbol b} = 0.5"
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:23, 22 April 2005 | 1,300 × 965 (179 KB) | Cburnett (talk | contribs) | Cumulative distribution function for the Inverse-gamma distribution {{GFDL}} gnuplot source under GPL: dinvgamma(x,a,b) = exp(a*log(b) - lgamma(a) - (a+1)*log(x) - b*1.0/x) pinvgamma(x,a,b) = 1 - igamma(a, b*1.0/x) set xtics 0,0.5 set ytics 0,0.5 |
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