Geometric mean

Definition

For positive numerical values, an average found by multiplying the values together and taking the root corresponding to the number of values: $G=(x_1x_2\cdots x_n)^{1/n}$ .

How each exam board covers it

Edexcel GCSE Statistics · 1ST0

Specification 2b.01 · Paper 1, Paper 2

In this course, mean means arithmetic mean unless geometric mean is explicitly stated. Weighted mean, geometric mean and mean seasonal variation are Higher-tier content.
Revise: Calculating averages for discrete and grouped data

Edexcel Statistics past papers

Exam tips

1
Unless geometric mean is explicitly requested, ‘mean’ means arithmetic mean.
2
For a geometric mean of growth rates, convert percentage changes to multipliers before multiplying. Put a fractional calculator power in brackets.