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What is the geometric mean of the data set 5, 10 and 20?
AIt is 11.67
BIt is 10.00
CIt is 12.60
DIt is 15.00
Answer & Solution
Correct answer: B. It is 10.00
1. Multiply the three values: 5 times 10 times 20 gives 1,000.
2. Take the cube root of 1,000, because there are three values.
3. The cube root of 1,000 is 10, so the geometric mean is 10.
_Source: OpenStax Introductory Business Statistics (CC BY 4.0), Ch 2 "Descriptive Statistics", section 2.5 Geometric Mean_
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