SOLUTION: Which is generally the more reliable data-gathering tool: a survey or a randomized comparative experiment? Explain your reasoning. please help me and thanks in advance

Question 891707: Which is generally the more reliable data-gathering tool: a survey or a randomized comparative experiment? Explain your reasoning.
please help me and thanks in advance
Answer by JulietG(1812) (Show Source): You can put this solution on YOUR website!
A randomized comparative experiment.
.
The problem with surveys is compliance. Usually the people who will respond are those with strong positive or negative feelings.
.
There's an excellent response to the problem of surveys here.
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