>>> John Boone on Ethics 
 JB> Bias is systemic error, resulting in over or underestimation 
 JB> of the strength of the association." 
Indeed, sometimes the very method of collecting data skews the data.  For 
example, accompanying a couple on their date.  Other times, semantical 
ambiguity can skew the study.
 JB> The point "unequal ratios" don't imply bias.  
No they don't.  At the very least you'd have to do a chi-squared test to 
determine if the difference was meaningful.  Then comes the interpretation.  
For example, does this statistical association indicate causation?
... Skip the truth, just get to the facts.
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