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

# Statistics

> Display single-value KPIs with optional period-over-period deltas.

The **Statistics** display type shows one or more headline numbers, perfect for KPIs, totals, and summary metrics.

## Configuration

Each statistics card contains one or more **items**. Each item is configured with:

| Setting       | Description                                                                                                                                      |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Column**    | The dataset column to aggregate.                                                                                                                 |
| **Operation** | The aggregation function, Sum, Average, Count, Median, Min, Max, etc. (the same operations available in [transformations](/datasets/transform)). |
| **Label**     | An optional custom label. If omitted, the column name and operation are used.                                                                    |
| **Format**    | Display as **long** (e.g. `1,234,567`) or **short** (e.g. `1.2M`).                                                                               |

## Period-over-period deltas

Each stat item can show a **delta**: the change compared to a previous period. Delta options:

| Mode               | What it shows                                          |
| ------------------ | ------------------------------------------------------ |
| **Absolute**       | The raw difference (e.g. `+500`).                      |
| **Percentage**     | The percentage change (e.g. `+12%`).                   |
| **Both**           | Absolute and percentage together (e.g. `+500 (+12%)`). |
| **Previous value** | The value from the previous period (e.g. `was 4,167`). |

You can **invert colors** so that a decrease shows as green and an increase as red, useful for metrics where lower is better (e.g. churn rate, error count).

## Card size

Statistics cards support three sizes:

| Size       | Use case                           |
| ---------- | ---------------------------------- |
| **Small**  | Compact, fits more cards in a row. |
| **Medium** | Default size.                      |
| **Large**  | Prominent, good for hero metrics.  |

## When to use statistics

Use statistics when you want to:

* Highlight a single important number (revenue, users, conversion rate).
* Show how a metric changed over time with deltas.
* Build a row of KPI cards at the top of a dashboard.

For detailed data, use a [table](/charts/table). For trends, use a [graph](/charts/graph).

## Related

* [Charts overview](/charts/overview)
* [Transformations](/datasets/transform), aggregation operations.