shortly before a 1992 mayoral election, a local radio station conducted a internet survey of voters. based on the results of the survey, the magazine predicted that the democratic candidate would beat the republican candidate by a landslide. in fact, exactly the opposite happened. the trouble with the survey was that the radio station was a largely liberal station and few republicans visited its web site. this is a classic example of an error in which phase of inferential statistics?
a. data gathering
b. data analysis
c. probability-based inference
d. data organization