Three sets of data contain 8, 7 and 5 observations and their gemometric means are 8.52, 10.12 and 7.75, respectively. Find the combined geometric mean of these 20 observation
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There are a number of ways of defining averages. A simple mean or weighted average are usually used in most situations. But the geometric mean is more applicable to a case where one is trying to find average percentage increases over some years, this occurs in financial calculat
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