Recently entering the machine learning, so that there is always calculate these minimum and maximum values, and now sort out
import numpy as np
arr = [1,2,5,8,9,6,7,3,4]
#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)
#求最值
arr_New = sorted(arr)
arr_Min = arr_New[0]
arr_Max = arr_New[len(arr_New)-1]
print("平均值为：%f" % arr_mean)
print("方差为：%f" % arr_var)
print("标准差为:%f" % arr_std)
print("最小值是：",arr_Min)
print("最大值是：",arr_Max)
