Question

what is the definiton of meta analysis

Answers

Saira
is a statistical procedure by which the results of many studies are combined to estimate the magnitude if a particular effect.

So basically it procedure for estimating the magnitude of experimental effects reported by published studies
PsyDAG
Although <B>Saira</B>s answer is correct, I searched Google under the key words "<I>meta analysis</I>" to get these possible sources:

http://en.wikipedia.org/wiki/Meta-analysis
http://wilderdom.com/research/meta-analysis.html
http://www.pitt.edu/~super1/lecture/lec1171/003.htm
http://www.psychwiki.com/wiki/Meta-analysis
http://www.JerryDallal.com/LHSP/meta.htm

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

This may be more information than you wanted, but I hope it helps a little more. Thanks for asking.

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