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Descrizione
Català: Una il·lustració de la llei dels grans nombres, semblant a File:LLN_Die_Rolls.gif però utilitzant el format svg en comptes de gif. Això utilitza dades diferents i, per tant, sembla diferent. El codi font es troba a la secció següent. El codi està sota la mateixa "llicència" que l'obra en si.
English: An illustration of the w:law of large numbers, similar to File:LLN_Die_Rolls.gif but using the svg format instead of gif. This uses different data from that and hence it looks different. Source code is in the section below. The code is under the same "license" as the work itself.
Data (UTC)
Fonte Opera propria
Autore NYKevin
Altre versioni
Other related versions:File:LLN_Die_Rolls.gif
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Source code

Note that you will need to insert some paths. I've tried to make it obvious where to do so.

This code is all in the public domain (the cc0 waiver applies to it)

The code (in Java) which generated the data:

import java.io.*;
public class Main {
    public static void main(String[] args) {
        PrintStream output=null;
        try{
            output=new PrintStream("");//FIXME Insert a suitable path in the quote marks
        }catch(FileNotFoundException e){
            throw new RuntimeException(e);
        }
        //int diceValues[] = {0,0,0,0,0,0};//this variable may be uncommented and used for debugging
        double average=0;
        double total=0;
        output.println("#count average");//makes a header for the data; may be safely removed
        Random rnd=new Random(4124484382302655524l);
        //seed selected by trial and error
        for(int i=1;i<=1000;i++){
            int rand=rnd.nextInt(6);//now holds a random int from 0 to 5
            //diceValues[rand]++;//uncomment for debugging
            rand++;//convert to 1-indexed
            total+=rand;
            average=total/i;
            output.println(i+" "+(average));
        }
        //System.out.println(average);
    }

}

The gnuplot code:

set terminal svg
set output "OUTPUT PATH HERE"
set title "average dice value against number of rolls"
set xlabel "trials"
set ylabel "mean value"
plot [] [1:6] "PATH FROM JAVA CODE HERE" title "average" with lines, 3.5 title "y=3.5" with lines
#it is recommended that you copy and paste this code into a .plt file and run it in batch mode:
#If you must run this interactively, be sure to type "exit" or ^D (control-D) at the end,
#or gnuplot will leave off the </svg> closing tag.

MATLAB/Octave Source code

% Specify how many trials you want to run:
num_trials = 1000;

% Now grab all the dice rolls:
trials = randi(6, [1 num_trials]);

% Plot the results:
figure(1);

% Cumulative sum of the trial results divided by the index gives the
% average:
plot(cumsum(trials)./(1:num_trials), 'r-');

% Let's put a reference line at 3.5 just for fun (make the color a darker
% green as well):
hold on;
plot([1 num_trials], [3.5 3.5], 'color', [0 0.5 0]);

% Make it look pretty:
title('average dice value against number of rolls');
xlabel('trials');
ylabel('mean value');
legend('average', 'y=3.5');
axis([0 num_trials 1 6]);


Licenza

Creative Commons CC-Zero Questo file è reso disponibile nei termini della licenza Creative Commons CC0 1.0 Universal.
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Data/OraMiniaturaDimensioniUtenteCommento
attuale22:28, 31 gen 2024Miniatura della versione delle 22:28, 31 gen 2024600 × 480 (25 KB)ManlleusFile uploaded using svgtranslate tool (https://svgtranslate.toolforge.org/). Added translation for ca.
03:53, 3 feb 2010Miniatura della versione delle 03:53, 3 feb 2010600 × 480 (22 KB)NYKevinIn the interest of replicability, this one was generated using a known PRNG seed value. Will update Java source. Also, this one has axis labels!
00:53, 1 feb 2010Miniatura della versione delle 00:53, 1 feb 2010600 × 480 (21 KB)NYKevinBetter version, with better Java code (more precise). Will update source soon.
00:35, 1 feb 2010Miniatura della versione delle 00:35, 1 feb 2010600 × 480 (21 KB)NYKevinI mixed up x and y in the legend, will update gnuplot source code in a moment (already checked for svg closing tag).
00:08, 1 feb 2010Miniatura della versione delle 00:08, 1 feb 2010600 × 480 (21 KB)NYKevinApparently gnuplot forgot the <svg> closing tag?
00:06, 1 feb 2010Nessuna miniatura (21 KB)NYKevinTrying again... looks like the last one had a problem?
00:04, 1 feb 2010Nessuna miniatura (21 KB)NYKevin{{Information |Description={{en|1=An illustration of the w:law of large numbers, similar to File:LLN_Die_Rolls.gif but using the svg format instead of gif. This uses different data from that and hence it looks different. I will include source c

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