##通过分位数-分位数图来验证收益率是否符合正态分布import statsmodels.api as smfig, axes = plt.subplots(3,2,figsize=(10,12))for i in range(0,3):for j in range(0,2):sm.qqplot(log_returns.iloc[:,2*i+j].dropna(),line='s',ax=axes[i,j])axes[i,j].set_title(log_returns.columns[2*i+j])axes[i,j].set_xlabel('理论分位数')axes[i,j].set_ylabel('样本分位数')plt.subplots_adjust(wspace=0.3,hspace=0.4)# 调整小分图之间的间距
