If you need to calculate `variance`

in Python, then you can do the following.

## Option 1 – Using `variance()`

from `Statistics`

module

```
import statistics
list = [12,14,10,6,23,31]
print("List : " + str(list))
var = statistics.variance(list)
print("Variance: " + str(var))
```

## Option 2 – Using `var()`

from `numpy`

module

```
import numpy as np
arr = [12,43,24,17,32]
print("Array : ", arr)
print("Variance: ", np.var(arr))
```

## Option 3 – Using `sum()`

and `List Comprehensions`

```
list = [12,43,24,17,32]
average = sum(list) / len(list)
var = sum((x-average)**2 for x in list) / len(list)
print(var)
```