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. (2013), "The
    Statistical Sleuth: A Course in Methods of Data Analysis (3rd
    ed)", Cengage Learning. 

Berwin Turlach

Sleuth3

Data Sets from Ramsey and Schafer's "Statistical Sleuth (3rd
        Ed)"

ex1615 function

Ramsey, F.L. and Schafer, D.W. (2013). <em>The Statistical Sleuth: A
    Course in Methods of Data Analysis (3rd ed)</em>, Cengage Learning.

ex1615: Trends in SAT Scores

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