fitgmdist混合比例意义

Question

我正在使用MATLAB函数fitgmdist，但我对输出含义非常困惑。混合比例意味着什么？

GMModel = 

Gaussian mixture distribution with 2 components in 1 dimensions
Component 1:
Mixing proportion: 0.647590
Mean:  -26.3258

Component 2:
Mixing proportion: 0.352410
Mean:  -76.9419