> ## Documentation Index
> Fetch the complete documentation index at: https://stedi.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Aggregation functions

## \$sum

**Signature:** `$sum(array)`

**Parameters:**

* `array` - An array of numbers.

Returns the arithmetic sum of an array of numbers. It is an error if the input array contains an item which isn't a number.

**Example**

| Expression          | Result |
| ------------------- | ------ |
| `$sum([5,1,3,7,4])` | `20`   |

## \$max

**Signature:** `$max(array)`

**Parameters:**

* `array` - An array of numbers.

Returns the maximum number in an array of numbers. It is an error if the input array contains an item which isn't a number.

**Example**

| Expression          | Result |
| ------------------- | ------ |
| `$max([5,1,3,7,4])` | `7`    |

## \$min

**Signature:** `$min(array)`

**Parameters:**

* `array` - An array of numbers.

Returns the minimum number in an array of numbers. It is an error if the input array contains an item which isn't a number.

**Example**

| Expression          | Result |
| ------------------- | ------ |
| `$min([5,1,3,7,4])` | `1`    |

## \$average

**Signature:** `$average(array)`

**Parameters:**

* `array` - An array of numbers.

Returns the mean value of an array of numbers. It is an error if the input array contains an item which isn't a number.

**Example**

| Expression              | Result |
| ----------------------- | ------ |
| `$average([5,1,3,7,4])` | `4`    |