ex1605

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?

datasets

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

Berwin Turlach

Sleuth2

Data sets from Ramsey and Schafer's "Statistical Sleuth (2nd
        ed)"

ex1605 function

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

ex1605: Nature---Nurture

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