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1 Ch 12 Function writing lInputting functions lFunction writing examples lPooled t-test lPlotting © Fall 2004 Don Edwards and the University of South Carolina.

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Presentation on theme: "1 Ch 12 Function writing lInputting functions lFunction writing examples lPooled t-test lPlotting © Fall 2004 Don Edwards and the University of South Carolina."— Presentation transcript:

1 1 Ch 12 Function writing lInputting functions lFunction writing examples lPooled t-test lPlotting © Fall 2004 Don Edwards and the University of South Carolina

2 2 Inputting functions lWork from a text file lFixing and sourcing lRe-editing

3 3 Pooled t-test refresher

4 4 Pooled t-test example lCode is reasonably transparent lOutput includes a graph and a dataframe (a list is more typical) lR function t.test is also available lBe careful of home-grown functions like this

5 5 Pooled t-test lbrowser() lGreat for debugging lRemembering options is difficult lBe careful about using it in loops

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