search for: trade_off

Displaying 1 result from an estimated 1 matches for "trade_off".

2010 Apr 27
0
NULL variable read in from SPS
...ble and there is nothing that I can tell that distinguishes it from the others. I have tried to include a good representation of reproduceable code below along with the results I am obtaining. Yours, Simon The variables are as follows: educ =c("university", "university") trade_off =c("*this cell is blank*", "disagree") age=c(45,43) gender_1=c("female", "female") eviro_spending=c("Less/Same", "Less/Same") carbon_tax_agg=c("agree", "disagree") y=data.frame(educ, trade_off, age, gender_1, enviro_spe...