twins: Burt's twin data
In alr3: Data to Accompany Applied Linear Regression 3rd Edition
Description
Format
Source
References
Examples
Description
The given data are IQ scores from identical twins; one raised in a foster home, and the other raised by birth parents.
Format
This data frame contains the following columns:
- C
-
Social class, 1=high, 2=medium, 3=low
- IQb
-
biological
- IQf
-
foster
Source
Burt, C. (1966). The genetic estimation of differences in intelligence: A study of monozygotic twins reared together and apart. Br. J. Psych., 57, 147-153.
References
Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Problem 6.16.
Examples
1
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Description Format Source References Examples
Description
The given data are IQ scores from identical twins; one raised in a foster home, and the other raised by birth parents.
Format
This data frame contains the following columns:
- C
-
Social class, 1=high, 2=medium, 3=low
- IQb
-
biological
- IQf
-
foster
Source
Burt, C. (1966). The genetic estimation of differences in intelligence: A study of monozygotic twins reared together and apart. Br. J. Psych., 57, 147-153.
References
Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Problem 6.16.
Examples
1 |
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