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

# Statistics Module

> Distributions and time series - Basic tier

# Statistics Module

**Tier:** Basic | **Cost:** 1 credit | **Endpoints:** 52

Statistical distributions, time series models, and hypothesis testing.

## Key Features

* 📊 13 probability distributions (PDF/CDF/PPF)
* 📈 Time series: ARIMA, GARCH, EGARCH
* 🔍 Statistical tests
* 📉 Descriptive statistics

## Popular Endpoints

**Normal Distribution:**

```bash theme={null}
POST /quantlib/statistics/normal-pdf
{"x": 0, "mean": 0, "std": 1}
```

**ARIMA Model:**

```bash theme={null}
POST /quantlib/statistics/arima
{"data": [...], "p": 1, "d": 1, "q": 1}
```

**GARCH:**

```bash theme={null}
POST /quantlib/statistics/garch
{"returns": [...], "p": 1, "q": 1}
```

[Full API Reference →](/api-reference/quantlib-statistics)