Displaying 1 result from an estimated 1 matches for "bwtmale".
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bbmale
2013 Feb 28
3
Hidden information in an object
Hello, The dataset "cats" contain information about the heart weight ("Hwt"), body weight ("Bwt") and gender ("Sex") of a group of 144 cats. I write the following piece of code: library(MASS)attach(cats)ratio <- Hwt/Bwtmale <- ratio[Sex == "M"]female <- ratio[Sex == "F"] My question is, when I look at the object "ratio", it is just a list of 144 numbers with no information about the gender of the cat that the ratio comes from, and yet the command "ratio[Sex == "M"]&qu...