import numpy as np
arr = [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)
import numpy as np
arr = [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)