Apamduööt:IQ curve.svg

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Cuutyic

Lëkcäät 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:
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Source code
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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
Aköl
Tënëyök Luɔ̈igup
Agɔ̈t 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.

Gɛmluɔ̈ɔ̈i

I, the copyright holder of this work, hereby publish it under the following licenses:
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This licensing tag was added to this file as part of the GFDL licensing update.
w:en:Creative Commons
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This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
Yïn launhom
  • bë röm – bë luoi thuur, ku tekpiny ku tooc aɣeer
  • bë bɛnlääp – bë looië jiɛlpiny
Käbɔ̈kë cök
  • abïcɔl – Të cï yïn lon ë raandɛ̈ luööi, ku wïc ba lueel ye ŋa ë lööm yïn luɔi thïn, ka dhil ba gɔ̈t në kuer gör yen ye, tëdɛ̈ ke kuer cï gɔ̈t në anyoothluɔic. Lakin, acie kuer lëu bï ye tak lɔn kɔ̈ɔ̈c yen raanë ke yï, tëdɛ̈ ka kääc ke të ̈cï yïn londe luööi thïn.
  • röm acït – Të wɛɛr yïn lon känic amääth, tëdɛ̈ të löök yïn ee nyïn ëbɛ̈n në wëlku, tëdɛ̈ të juɛk yïn ee nhom në wëlkɔ̈k, ka kë bë bɛ̈nbei thïn alëu ba tɛkpiny, të buɔɔth yïn anyoothluɔi kän cök wälä anyoothluɔi dɛ̈t thöŋ ke ye.
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Aköl/Akɔ̈licRiöpbundïtThëmthëmDuluiKëcïjaamic
ee mënë01:11, 27 Pɛnëthiäärkutök 2020Alelthook ë riöpcök, tɛ̈cït 01:11, 27 Pɛnëthiäärkutök 2020600 × 480 (9 KB)ParanajaReverted to version as of 21:27, 2 November 2012 (UTC)
23:27, 2 Pɛnëthiäärkutök 2012Alelthook ë riöpcök, tɛ̈cït 23:27, 2 Pɛnëthiäärkutök 2012600 × 480 (9 KB)Mikhail RyazanovIQ values are now integers; gnuplot-only approach
11:20, 6 Pɛnëthiäärkurou 2006Alelthook ë riöpcök, tɛ̈cït 11:20, 6 Pɛnëthiäärkurou 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

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