[go: up one dir, main page]
Jump to content

File:IQ curve.svg

Page contents not supported in other languages.
From Wikiquote

Original file (SVG file, nominally 600 × 480 pixels, file size: 9 KB)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

Summary

Description Current IQ tests typically have standard scores such that the mean score is 100 with each standard deviation from the mean counting for 15 IQ points.[1] The plot shows, assuming that such scores have a normal distribution, the percentage of people getting a score versus the score itself, from 55 to 145 IQ, that is over a span of six standard deviations. Spans are represented with different colors for each standard deviation above or below the mean. The plot was created with the following gnuplot code:
SVG development
InfoField
 
The SVG code is valid.
 
This chart was created with Gnuplot.
 
This chart uses translateable embedded text.
Source code
InfoField

Gnuplot code

set terminal svg name 'IQ_curve' size 600,480 font ',10' rounded
set output 'IQ_curve.svg'

mu    = 100.0
sigma = 15.0
from  = 55
to    = 145

# Normal distribution:
# (continuos normalization approximation, good to ~10 digits in this case)
P(x) = exp(-(x - mu)**2 / (2 * sigma**2)) / (sqrt(2 * pi) * sigma) * 100
# By sigma intervals:
oddsi(x) = (int(abs(x - mu) / sigma) % 2) ^ (x < mu)
Pm(x) =               (x == mu)  ? P(x) : 1/0 # sample at mu
Po(x) = ( oddsi(x) && (x != mu)) ? P(x) : 1/0 # samples in odd sigma intervals
Pe(x) = (!oddsi(x) && (x != mu)) ? P(x) : 1/0 # samples in even sigma intervals

set key off
set border 3
set xlabel 'IQ'
set xtics 10 out nomirror
set mxtics 2
set ylabel 'Population, %'
set ytics 1 out nomirror
set mytics 2
set samples (to - from + 1)
set style function impulses
plot [x = from:to] \
 Pm(x) lw 2, \
 Po(x) lw 2, \
 Pe(x) lw 2
Date
Source Own work
Author Alessio Damato, Mikhail Ryazanov
  1. ↑ Kaufman, A.S. (2009) IQ Testing 101, New York (NY): Springer Publishing, pp. 104−109 ISBN: 978-0-8261-0629-2.

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head 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.
w:en:Creative Commons
attribution share alike 		This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

copyrighted<\/a>"}},"text\/plain":{"en":{"P6216":"copyrighted"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P6216 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">

copyright status

copyrighted

GNU Free Documentation License, version 1.2 or later<\/a>"}},"text\/plain":{"en":{"P275":"GNU Free Documentation License, version 1.2 or later"}}},"{\"value\":{\"entity-type\":\"item\",\"numeric-id\":47001652,\"id\":\"Q47001652\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"P275":"Creative Commons Attribution-ShareAlike 1.0 Generic<\/a>"}},"text\/plain":{"en":{"P275":"Creative Commons Attribution-ShareAlike 1.0 Generic"}}},"{\"value\":{\"entity-type\":\"item\",\"numeric-id\":19113751,\"id\":\"Q19113751\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"P275":"AmisseCreative Commons Attribution-ShareAlike 2.5 Generic<\/a>"}},"text\/plain":{"en":{"P275":"AmisseCreative Commons Attribution-ShareAlike 2.5 Generic"}}},"{\"value\":{\"entity-type\":\"item\",\"numeric-id\":14946043,\"id\":\"Q14946043\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"P275":"Creative Commons Attribution-ShareAlike 3.0 Unported<\/a>"}},"text\/plain":{"en":{"P275":"Creative Commons Attribution-ShareAlike 3.0 Unported"}}},"{\"value\":{\"entity-type\":\"item\",\"numeric-id\":19068220,\"id\":\"Q19068220\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"P275":"Creative Commons Attribution-ShareAlike 2.0 Generic<\/a>"}},"text\/plain":{"en":{"P275":"Creative Commons Attribution-ShareAlike 2.0 Generic"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P275 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">

copyright license

GNU Free Documentation License, version 1.2 or later

Creative Commons Attribution-ShareAlike 1.0 Generic

AmisseCreative Commons Attribution-ShareAlike 2.5 Generic

Creative Commons Attribution-ShareAlike 3.0 Unported

Creative Commons Attribution-ShareAlike 2.0 Generic

original creation by uploader<\/a>"}},"text\/plain":{"en":{"P7482":"original creation by uploader"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P7482 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">

source of file

original creation by uploader

inception

2 November 2012

media type

image/svg+xml

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current23:11, 26 November 2020Thumbnail for version as of 23:11, 26 November 2020600 × 480 (9 KB)ParanajaReverted to version as of 21:27, 2 November 2012 (UTC)
21:27, 2 November 2012Thumbnail for version as of 21:27, 2 November 2012600 × 480 (9 KB)Mikhail RyazanovIQ values are now integers; gnuplot-only approach
09:20, 6 December 2006Thumbnail for version as of 09:20, 6 December 2006600 × 480 (12 KB)Alejo2083 {{Information |Description= The IQ test is made so that most of the people will score 100 and the distribution will have the shape of a Gaussian function, with a standard deviation of 15. The plot shows the percentage of people getting a score versus the

There are no pages that use this file.

Global file usage

The following other wikis use this file:

View more global usage of this file.

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from "https://en.wikiquote.org/wiki/File:IQ_curve.svg"