twins {UsingR} | R Documentation

## Burt's IQ data for twins

### Description

IQ data of Burt on identical twins that were separated near birth.

### Usage

    data(twins)

### Format

A data frame with 27 observations on the following 3 variables.

Foster
  IQ for twin raised with foster parents
Biological
  IQ for twin raised with biological parents
Social
  Social status of biological parents

### Details

### Source

This data comes from the R package that accompanies Julian Faraway's notes Practical Regression and Anova in R (now a book).

### Examples

    data(twins)
    plot(Foster ~ Biological, twins)

[Package UsingR version 0.1-4 Index]