---
title: Quantile-quantile chart
styles: [scientific]
---

```chart
type: qq
title: Most deliveries track a normal curve, but the slowest few fall well above it
subtitle: Days to deliver against the normal quantile; the dashed line passes through the quartiles
data:
  inline:
    - {days: 2.1}
    - {days: 2.6}
    - {days: 2.9}
    - {days: 3.1}
    - {days: 3.3}
    - {days: 3.4}
    - {days: 3.6}
    - {days: 3.7}
    - {days: 3.9}
    - {days: 4.0}
    - {days: 4.2}
    - {days: 4.3}
    - {days: 4.5}
    - {days: 4.6}
    - {days: 4.9}
    - {days: 5.1}
    - {days: 5.4}
    - {days: 5.8}
    - {days: 6.3}
    - {days: 7.2}
    - {days: 8.9}
encoding: {y: days}
axes:
  y: {label: Days to deliver}
```