# Python Statistics Module

The `statistics` module provides functions for calculating mathematical statistics of numeric (Real-valued) data.

## Importing the Module

```python
import statistics
```

## Averages and Measures of Central Location

### `mean()`

Return the sample arithmetic mean of data.

```python
import statistics

data = [1, 2, 3, 4, 4]
print(statistics.mean(data)) # Output: 2.8
```

### `median()`

Return the median (middle value) of numeric data, using the common "mean of middle two" method.

```python
import statistics

data = [1, 3, 5, 7]
print(statistics.median(data)) # Output: 4.0
```

### `mode()`

Return the single most common data point from discrete or nominal data.

```python
import statistics

data = [1, 2, 2, 3, 4, 2]
print(statistics.mode(data)) # Output: 2
```

## Measures of Spread

### `stdev()`

Return the square root of the sample variance.

```python
import statistics

data = [1.5, 2.5, 2.5, 2.75, 3.25, 4.75]
print(statistics.stdev(data))
```

### `variance()`

Return the sample variance of data, an iterable of at least two real-valued numbers.

```python
import statistics

data = [2.75, 1.75, 1.25, 0.25, 0.5, 1.25, 3.5]
print(statistics.variance(data))
```

[[programming/python/python]]