How to correctly change mean in the distribution?

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Nathalie 2014-3-21

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https://ww2.mathworks.cn/matlabcentral/answers/122574-how-to-correctly-change-mean-in-the-distribution

编辑： Matt J 2014-3-21

I computed numerically g-pdf function, where the means- i take points in the grid. When I would to change the mean, i.e. multiply by 1.5*mean, I get completely different results. Do you know why it can happen?

dx = (x_max-x_min)/(n_max-1);
grid_x=linspace(x_min, x_max, n_max);
grid_x = (grid_x(1:end-1)+grid_x(2:end))/2;
g = [];
for i=1:n_max-1
      g = [g; dx*normpdf(grid_x, grid_x(i), sigma)];
  end