This part mainly discusses the statistical distribution of the price and the returns rate , including random process and the returns rate model , gaussian process , measuring returns rate with discrete random process , white noise process , auto regression process , moving average process , auto regression moving average process , random walk , continuous random process , leptokurtic distribution , conditional mixed distribution , garch model and fractal distribution 在這一部分中,我們主要討論價格和收益率的統計分布:隨機過程和收益率模型、高斯過程、收益率計量中的離散隨機過程、白噪聲過程、自回歸過程、移動平均過程、自回歸移動平均過程、隨機行走、連續隨機過程、尖峰分布、條件混合分布、 garch模型以及分形分布。