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

Question

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

anonymous · Answer

is it A?

dangerousjesse · Answer

Well, they based their guess on the votes that their viewers gave them, when the viewers probably all had similar views on several things, including politics, seeing as they all enjoyed that same radio show. The fact that they based their guess on what a group of homogeneous people said means that they made an error in using probability-based inference.

anonymous · Answer

okay thank you , let me see if thats right

anonymous · Answer

That was incorrect, it was data gathering