Multiple Choice
IQ scores are typically scaled to have mean and standard deviation . What is the mean IQ score for a person with an average IQ?
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3. Describing Data Numerically
Mean
Multiple Choice
What is the geometric mean of 7 and 12?
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Verified step by step guidance1
Understand that the geometric mean of two numbers is the square root of their product. It is a measure that indicates the central tendency by multiplying the numbers and then taking the root corresponding to the count of numbers.
Identify the two numbers given: 7 and 12.
Calculate the product of the two numbers: multiply 7 by 12, which gives \(7 \times 12\).
Take the square root of the product obtained in the previous step, which is \(\sqrt{7 \times 12}\).
Express the geometric mean as \(\sqrt{84}\), since 7 times 12 equals 84.
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