Matlab：为什么我的情节没有收敛？

Question

你能帮助我理解为什么情节不会收敛吗？我在代码中遗漏了什么？我正在根据试验次数绘制均值和方差。 THX

samplesize = 10;
trialsize = 1000;

firstvector = [1:trialsize];
vectorB = zeroes(trialsize,1);
vectorC = zeroes(trialsize,1)

for i=1:trialsize
   v1 = rand(samplesize, 1)
   vectorB(i) = mean(v1);
   vectorC(i) = var(v1);
end

plot(firstvector,vectorB)
plot(firstvector,vectorC)

Answer 1

这是你想做的吗？基本上一次取10个样本的平均值和变量？所以第一个循环需要10个，接下来的20个，接下来的30个...... 1000次？

在你一次只取10个随机样本的平均值和变量之前......你永远不会收敛。

samplesize = 10;
trialsize = 1000;

firstvector = [1:trialsize];
vectorB = zeros(trialsize,1);
vectorC = zeros(trialsize,1);
v1 = rand(trialsize*samplesize, 1);
for i=1:trialsize
   vectorB(i) = mean(v1(1:i*samplesize));
   vectorC(i) = var(v1(1:i*samplesize));
end

subplot(2,1,1);plot(firstvector,vectorB)
subplot(2,1,2);plot(firstvector,vectorC)