27 lines
621 B
Matlab
27 lines
621 B
Matlab
ndies = 20;
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n = 100;
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P = zeros(ndies, 6);
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for i = 1:ndies
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% (a) roll a single die:
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x = rollthedie( n );
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% (b) compute normalized histogram:
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[h,b] = hist( x, 1:6 );
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h = h/sum(h); % normalization
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% (c) store the histograms:
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P(i,:) = h;
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end
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% (c) mean and standard deviation for each eye:
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m = mean(P, 1);
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s = std(P, 1);
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% (d) plot results:
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bar(m, 'facecolor', [0.8 0 0]); % darker red
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hold on;
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errorbar(m, s, '.k', 'linewidth', 2 ); % k is black
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set(gca, 'XTick', 1:6 );
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xlim( [ 0, 7 ] );
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ylim( [ 0, 0.25])
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xlabel('Eyes');
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ylabel('Probability');
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hold off;
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savefigpdf(gcf, 'die2.pdf', 6, 5)
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