Billede:Normal distribution pdf.png
Fra Wikipedia, den frie encyklopædi
| Denne fil er fra Wikimedia Commons, en samling af åbent indhold som Wikimedia Foundation er vært for. Beskrivelsen fra siden med beskrivelse af billedet er vist nedenfor. |
| This image (or all images in this article or category) should be recreated using vector graphics as an SVG file. This has several advantages; see Commons:Images for cleanup for more information. If an SVG form of this image is already available, please upload it. After uploading an SVG, replace this template with template {{SupersededSVG|new image name.svg}} in this image.
Česky | Deutsch | English | Español | Français | Italiano | Nederlands | Polski | Português | Русский | العربية | +/- |
Probability density function for the normal distribution
| Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".
العربية | Česky | Deutsch | English | Español | Français | Italiano | 日本語 | 한국어 | Nederlands | Polski | Português | Slovenčina | Svenska | עברית +/- |
gnuplot source under GPL:
_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 samples 1001
set terminal postscript enhanced color solid lw 2 "Times-Roman" 20
set output
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, 0.2) title "{/Symbol m} = 0, {/Symbol s}^2 = 0.2", \
| This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This work is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
Billedehenvisninger
De følgende sider henviser til dette billede:

