File:Normal distribution pdf.svg
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Probability density function for the normal distribution
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gnuplot source under GPL; originally by MarkSweep:
_ln_dnorm(x, m, s) = -0.5 * log(2*pi) - log(s) - 0.5*((x-m)*1.0/s)**2 dnorm(x, mean, sd) = exp(_ln_dnorm(x, mean, sd)) pnorm(x, mean, sd) = norm((x-mean) * 1.0/sd) set terminal svg set output 'Normal distribution pdf.svg' set xrange [-5:5] set xtics 1 set yrange [0:1] set ytics 0.1 f(x,y,z) = dnorm(x, y, sqrt(z)) #use variance, not sd! set key 3.8,0.94 #f(x,y,z) = pnorm(x, y, sqrt(z)) #set key 3.8,0.2 plot \ f(x, 0, 1) title "μ = 0, σ² = 1.0", \ f(x, 0, 5) title "μ = 0, σ² = 5.0", \ f(x, -2, 0.5) title "μ = -2, σ² = 0.5"
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:49, 24 December 2006 | 600 × 480 (11 KB) | Grendelkhan (talk | contribs) | Replace use of μ with μ | |
06:46, 24 December 2006 | 600 × 480 (31 KB) | Grendelkhan (talk | contribs) | Probability density function for the normal distribution {{GFDL}} gnuplot source under GPL; originally by User:MarkSweep: _ln_dnorm(x, m, s) = -0.5 * log(2*pi) - log(s) - 0.5*((x-m)*1.0/s)**2 dnorm(x, mean, sd) = exp(_ln_dnorm(x, mean, sd)) pnorm |
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