# Variance and Standard Deviation

In this module, you will learn how to quantify the spread of the dataset by calculating the variance and standard deviation.

Start## Key Concepts

Review core concepts you need to learn to master this subject

Calculating Variance in Python

Interpretation of Variance

Variance

Standard Deviation

Standard Deviation Units

Calculating Standard Deviation in Python

Calculating Variance in Python

Calculating Variance in Python

```
import numpy as np
values = np.array([1,3,4,2,6,3,4,5])
# calculate variance of values
variance = np.var(values)
```

In Python, we can calculate the variance of an array using the NumPy `var()`

function.

Variance

Lesson 1 of 2

## What you'll create

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## How you'll master it

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