Frequently Asked Questions
When should I use the geometric mean?
Use it for quantities that compound or are expressed as ratios, such as growth rates, investment returns, and index numbers. It gives the true average growth factor.
Why must all values be positive?
The geometric mean multiplies the values and takes a root, which is undefined for zero or negative numbers, so every value must be strictly positive.
Why is it lower than the arithmetic mean?
The geometric mean is always less than or equal to the arithmetic mean, and the two are equal only when every value is identical. The gap grows as the spread of values increases.
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Estimates for informational purposes only.
Important Disclaimer: Estimates for informational purposes only.
This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.