search for: sca2

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2007 Jun 26
2
Aggregation of data frame with calculations of proportions
...number tested. It's all in a data frame: This should all be directly runnable with cut+paste: sp = read.csv('http://www.wardle.org/sca-prev.csv', header=T)[,c(-1,-2)] str(sp) #'data.frame': 46 obs. of 19 variables: # $ sca1 : int 5 1 NA NA 48 1 NA 17 21 4 ... # $ sca2 : int 7 3 NA NA 53 1 NA NA 7 7 ... # $ sca3 : int 3 1 NA NA 2 0 NA 29 0 0 ... # $ sca6 : int 1 0 NA NA 2 2 NA NA 0 0 ... # $ sca7 : int NA NA NA NA 2 0 NA NA 1 0 ... # $ sca8 : int NA NA NA NA 2 1 NA NA NA NA ... # $ sca10 : int NA NA NA NA 0 0 NA NA N...