Baumann data frame has 66 rows and 6 columns.
The data are from an experimental study conducted by Baumann and Jones, as reported
by Moore and McCabe (1993) Students were randomly assigned to one of three
This data frame contains the following columns:
a factor with levels:
Basal, traditional method of teaching;
DRTA, an innovative method;
Strat, another innovative method.
Moore, D. S. and McCabe, G. P. (1993) Introduction to the Practice of Statistics, Second Edition. Freeman, p. 794–795.
Fox, J. (2008) Applied Regression Analysis and Generalized Linear Models, Second Edition. Sage.
Fox, J. and Weisberg, S. (2011) An R Companion to Applied Regression, Second Edition, Sage.
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