search for: indepence_test

...est(tumor ~ dose, data = lungtumor, teststat = "quad") (http://tolstoy.newcastle.edu.au/R/help/05/11/16601.html). In Peter Dalgaards Introductory statistics with R, a similar test for trends in proportions (prop.trend.test) is described (page 134). I wonder whether prop.trend.test and indepence_test are actually similar. >From http://www-stat.stanford.edu/~rag/stat141/exs/nov17 and the example above one would think so. Since my dataset does not contain only integers (see below) I cannot get Torsten's example to work with my data. I would appreciate some help, and would like to excuse i...