# Thread: Calculating representative value for data

1. ## Calculating representative value for data

Assume there are ten data with values a_1, a_2, ..., a_10 each with different non-symmetric errors. The problem confronting me in brief is, to combine the 10 results a_i and their associated non-symmetric errors according to some acceptable precept so as to determine the value of a and its errors which best represents the aggregate of observations.

I would appreciate any insight into this problem.

2. ## Re: Calculating representative value for data

The problem is part of meta-analysis. This is a relatively advanced area of statistics, requiring more than 3 sentences. The two most popular methods are "fixed effects" and "random effects", but there is much more to the field. The following slides may serve as the start:

https://www.stata.com/meeting/10uk/meta_stata.pdf

3. ## Re: Calculating representative value for data

Originally Posted by puma31
I would appreciate any insight into this problem.
But you have already asked about that in this thread. It is just confusing (e.g. for staassis) if you start a new thread and they are not aware of the context. Stick to one thread.

4. ## Re: Calculating representative value for data

Thank you both for your kind advice and help. The meta-analysis link seems close to what I need.

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