heights | R Documentation |

Heights of 12 girls from the Chard Growth Study measured twice a year between 8 and 16 years of age.

```
heights
```

A data frame with 124 observations on the following 4 variables:

- id
factor of subject ids (levels 1:12).

- age
vector of ages (years).

- height
vector of heights (cm).

- men
vector of ages at menarche (years), where negative values are right censored.

```
require(graphics)
data(heights)
coplot(height ~ age | id, data = heights, panel=panel.smooth,
show.given=FALSE, xlab='age (years)', ylab='height (cm)', pch=19)
```

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