ex1615

Data shows a partial listing of a data set with ratios of average math
  to average verbal SAT scores in the United States and the District of
  Columbia for 1989 and 1996--1999.

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)"

ex1615 function

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

ex1615: Trends in SAT Scores

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