Hello,

i have this dataset http://www.umass.edu/statdata/statdata/data/pharynx.txt.

the variables GRADE, T_STAGE anda N_STAGE are qualitative or quantitative  
variables???

i only have this simple doubt...!

another example: why in the dataset ovarian (library survival) the variable  
ecog.ps: ECOG performance status (1 is better, see reference) it is  
consider quantitative?


Thank's for all..!!

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