import numpy as nparr = [1,2,3,4,5,6]#求均值arr_mean = np.mean(arr)#求方差arr_var = np.var(arr)#求标准差arr_std = np.std(arr,ddof=1)print("平均值为:%f" % arr_mean)print("方差为:%f" % arr_var)print("标准差为:%f" % arr_std)