Python | Numpy matrix.std()
借助**matrix.std()**方法，我们可以用同样的方法求出一个矩阵的标准差。
语法:
matrix.std()返回:返回矩阵的标准差
示例#1 :
在本例中，我们能够使用matrix.std()方法找到矩阵的标准差。
# import the important module in python
import numpy as np
# make matrix with numpy
gfg = np.matrix('[4, 1; 12, 3]')
# applying matrix.std() method
geek = gfg.std()
print(geek)
Output:
4.18330013267
例 2 :
# import the important module in python
import numpy as np
# make matrix with numpy
gfg = np.matrix('[4, 1, 9; 12, 3, 1; 4, 5, 6]')
# applying matrix.std() method
geek = gfg.std()
print(geek)
Output:
3.3993463424
