# XWUIChartNormalDistribution

A normal-distribution chart backed by `XWUIChart` that draws the bell curve of a dataset so you can read its centre and spread at a glance. Provide named `series` of `{ x, y }` points and pick a `block` (1-4) variant plus a `size` preset; legend and grid auto-toggle per block unless overridden.

## Basic Usage

Two named series - `Series A` (30→64) and `Series B` (22→52) across Jan-Jun - plotted as distribution curves.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two series drawn as a normal-distribution chart at the md preset.
```

## Exam Score Distribution Across Cohorts

Morning and evening student cohorts binned by score band, plotted as overlaid distribution curves at the lg preset with data labels.

```example
file: examples/ExamScoreCohorts.ts
html: examples/ExamScoreCohorts.html
title: Exam Score Distribution Across Cohorts
description: Two cohorts binned by 5-point score band as overlaid bell curves.
```

## Machined Part Tolerance vs Spec

Shaft-diameter measurements from two production lines centred on the 20.00mm target, shown interactively with grid values.

```example
file: examples/PartToleranceVsSpec.ts
html: examples/PartToleranceVsSpec.html
title: Machined Part Tolerance vs Spec
description: Two production lines' part dimensions distributed around the target spec.
```

```api
```