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# How to Calculate Mean, Variance and Std of a Matrix or ndArray?

# How to Calculate Mean, Variance and Std of a Matrix or ndArray?

This recipe helps you Calculate Mean, Variance and Std of a Matrix or ndArray

This python source code does the following: 1. Creates custom numpy matrix 2. Performs statistical analysis of the matrix

In [1]:

```
## How to Calculate Mean, Variance and Std a Matrix or ndArray
def Kickstarter_Example_11():
print()
print(format('How to Calculate Mean, Variance and Std a Matrix or ndArray'
,'*^72'))
# Load library
import numpy as np
# Create matrix
matrixA = np.array([[1, 2, 3, 23],
[4, 5, 6, 25],
[7, 8, 9, 28],
[10, 11, 12, 41]])
# Return median, mean, variance and std
print(); print("Median: ", np.median(matrixA))
print(); print("Mean: ", np.mean(matrixA))
print(); print("Variance: ", np.var(matrixA))
print(); print("Standrad Dev: ", np.std(matrixA))
Kickstarter_Example_11()
```

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