# XWUIChartMeanCI

A mean-with-confidence-interval chart: a fixed-type wrapper around `XWUIChart` (resolving to
the `distribution` renderer) that plots each group's central tendency with its surrounding
confidence band, so you can read both the estimate and its uncertainty. Construct it with
`(container, data, conf_comp)` where data is `{ series, title? }`, then pick a `size` preset
and a `block` (1-4) styling variant. Use it to compare group means while keeping the spread
of each estimate visible.

## Basic Usage

Two named series of monthly values rendered as mean/CI distributions at the medium size
preset.

```example
file: examples/BasicUsage.ts
html: examples/BasicUsage.html
title: Basic Usage
description: Two series rendered as mean-and-confidence-interval distributions.
```

## A/B Test Conversion with CI

A variant's mean conversion rate flanked by its 95% upper and lower bounds, with the band tightening over time.

```example
file: examples/ABTestConfidence.ts
html: examples/ABTestConfidence.html
title: A/B Test Conversion with CI
description: Weekly mean conversion with a 95% confidence band narrowing as data accrues.
```

## Dose-Response with Error Bands

Mean symptom reduction across drug doses bracketed by a 95% confidence band that widens at the plateau.

```example
file: examples/DoseResponse.ts
html: examples/DoseResponse.html
title: Dose-Response with Error Bands
description: A clinical dose-response curve with its surrounding confidence interval.
```

```api
```