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Normal Distribution of the CDF Error Function Plotting

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Elaine Li
Elaine Li 2020-12-31
回答： Kanishk 2024-8-8，8:18
What command do I need to enter to plot:
f(z) = 794.5 (1 + erf((x - 97.69760856)/(25.85046741√2)))

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Kanishk
Kanishk 2024-8-8，8:18
I understand you are trying to plot the Normal Distribution of CDF error Function.
You can start by defining the general function with parameters.
CDF = a * (1 + erf((x - mu) / (sigma * sqrt(2))));
For the equation provided the parameters will be:
mu = 97.69760856;
sigma = 25.85046741;
a = 794.5;
To plot the equation,
figure;
plot(x, CDF, 'LineWidth', 2);
grid on;
title('CDF of the Normal Distribution using the Error Function');
xlabel('x');
ylabel('CDF');
legend(['\mu = ' num2str(mu) ', \sigma = ' num2str(sigma)]);
You can learn more about plotting functions in MATLAB from the documentation. https://www.mathworks.com/help/matlab/ref/plot.html
Hope this helps

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