The Geometric Mean (G.M.) is the average of a set of positive numbers calculated by multiplying them together and then taking the \(n^{\text{th}}\) root (where \(n\) is the total number of values). It is especially useful for data involving rates, ratios, or percentages.
\[ G.M. = \sqrt[n]{x_1 \cdot x_2 \cdot \cdots \cdot x_n} \]
Where: