SAMPLING ERROR AND SAMPLING BIAS:

Sampling error may  be  deiined  as the difference between  data obtained  from random sample and data  obtained  from  entire population.  Error may  be contained  In  sample data even when most careful  random sampling procedure has been used in obtaining the  sample sampling  error  is  not  under  researchers control. It is caused  by  the chance variations  that may occur when the sample is  chosen to represent  a population value. 

Sampling bias  occurs when  researcher  does not carefully select samples. Non- probability sampling methods are subjecrs  tc sampling bias. Sampling  error occurs  by  chance and researcher  causes  sanlpling bias.  

Posted Date: 11/2/2012 8:59:41 AM | Location : United States

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