UsingR (version 2.0-7)

twins: 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

Examples

# NOT RUN {
data(twins)
plot(Foster ~ Biological, twins)
# }