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Old 04-11-2013
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Stats types of bias:

measurement bias:
information is gathered in a maner that distorts the information.
solution: have a control group

experimentr expectancy(pygmalion) :
exprimentrs expectation inadvertently comunincated to subjects,who than produce the desired efects.
solution: double blind design study

i undrstands their's examples but not above to explanations.
if any one have beter explanation in simple words than these pls share.thanks
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