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File:Probit plot.png

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English: Probit plot. Original description:

Plot of the probit function . I created this image myself with the following Python code: 

from matplotlib.pylab import *
from scipy.special import erfinv


def probit(p):
    return sqrt(2) * erfinv(2 * p - 1)


x_i = arange(0.0001, 0.9999, 0.001)
plot(x_i, probit(x_i), 'r')
xlabel('probability')
ylabel('probit')
grid(True)
xticks(arange(0, 11) / 10.0)
savefig('image.png', dpi=80)
Date and 2007-01-12 (log)
Source en:File:Probit plot.png
Author Coffee2theorems (talk)
Permission
(Reusing this file)
Public domain This work has been released into the public domain by its author, Coffee2theorems at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Coffee2theorems grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Other versions
File:Probit plot.svg is a vector version of this file. It should be used in place of this PNG file when not inferior.
File:Probit plot.png → File:Probit plot.svg
For more information, see Help:SVG.
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Date/TimeThumbnailDimensionsUserComment
current07:41, 13 April 2009Thumbnail for version as of 07:41, 13 April 2009640 × 480 (15 KB)Tartaglia (talk | contribs){{Information |Description= Probit plot |Source= http://en.wikipedia.org/wiki/File:Probit_plot.png |Date= 23/07/2006 |Author= unknown |Permission= |other_versions= }} Category:Math images that should use vector graphics [[Category:Statistical charts]

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