ex1605: Nature-Nurture

In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"

Description

Data are a subset from an observational, longitudinal, study on adopted children. Is child's intelligence related to intelligence of the biological mother and the intelligence of the adoptive mother?

Usage

ex1605

Format

A data frame with 62 observations on the following 6 variables.

AMED

adoptive mother's years of education

BMIQ

biological mother's score on IQ test

Age2IQ

IQ of child at age 2

Age4IQ

IQ of child at age 4

Age8IQ

IQ of child at age 8

Age13IQ

IQ of child at age 13

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Skodak, M. and Skeels, H.M. (1949). A Final Follow-up Study of One Hundred Adopted Children, Journal of Genetic Psychology 75: 85–125.

See Also

ex1319

Examples

str(ex1605)

Example output

'data.frame':	62 obs. of  6 variables:
 $ AMED   : num  10 10 14 7 14 8 13 16 10 8 ...
 $ BMIQ   : num  100 71 89 73 64 64 104 76 81 78 ...
 $ Age2IQ : num  120 131 126 120 126 125 105 130 107 104 ...
 $ Age4IQ : num  115 109 115 102 125 109 107 112 120 108 ...
 $ Age8IQ : num  109 113 113 111 114 96 106 124 109 125 ...
 $ Age13IQ: num  106 95 90 121 96 87 104 125 115 124 ...

Sleuth2 documentation built on May 2, 2019, 7:01 a.m.