Image:LinearRegression.svg

[edit] Gnuplot source code

set terminal svg fname "Helvetica" fsize 25
set output "LinearRegression.svg"
set key left
set xtics axis 1,1
set ytics nomirror 1
set border 2
f(x) = a*x + b
fit f(x) 'randpts' using 1:2 via a,b
set yrange [-0.9:4]
plot 'randpts' with points pointtype 7 pointsize 0.3 title 'Datapoints', \
        f(x) with lines linetype 3 linewidth 3 title 'Regression',  \
        0 with lines linetype -1 notitle

The datafile 'randpts' was made in GNU Octave using the commands

f = fopen('randpts', 'w')
for i=1:200; 
   x=rand(1); 
   y=0.7*rand(1) + 3*x; 
   fprintf(f, '%g %g\n', x, y); 
end
fclose(f)

(identical code also works in Matlab.)

[edit] License

I, Berland, the copyright holder of this work, hereby release it into the public domain. This applies worldwide. In case this is not legally possible: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. Afrikaans | Alemannisch | Aragonés | العربية | Asturianu | Български | Català | Česky | Cymraeg | Dansk | Deutsch | Eʋegbe | Ελληνικά | English | Español | Esperanto | Euskara | Estremeñu | فارسی | Français | Galego | 한국어 | हिन्दी | Hrvatski | Ido | Bahasa Indonesia | Íslenska | Italiano | עברית | Kurdî / كوردی | Latina | Lietuvių | Latviešu | Magyar | Македонски | Bahasa Melayu | Nederlands | ‪Norsk (bokmål)‬ | ‪Norsk (nynorsk)‬ | 日本語 | Polski | Português | Ripoarisch | Română | Русский | Shqip | Slovenčina | Slovenščina | Српски / Srpski | Svenska | ไทย | Tagalog | Türkçe | Українська | Tiếng Việt | Walon | ‪中文(简体)‬ | ‪中文(繁體)‬ | zh-yue-hant | +/-

• Regression analysis