What is the geometric mean of 2, 8 and 32?
Correct answer: C. 8
- A. 4
- B. 6
- C. 8
- D. 12
Explanation
The geometric mean is the cube root of the product: (2 × 8 × 32)^(1/3) = 512^(1/3) = 8. The arithmetic mean would be different because it adds the values instead of multiplying them.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Measures of Central Tendency and Dispersion
Central tendency includes mean, weighted mean, median and mode for raw and grouped data. Dispersion covers range, quartiles, interquartile range, variance, standard deviation and coefficient of variation, including the effect of changes in scale and the distinction between a representative centre and the spread around it.
Practise Measures of Central Tendency and Dispersion
30 free Measures of Central Tendency and Dispersion MCQs from Quantitative Methods, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Quantitative Methods questions like this
Quantitative Methods is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Measures of Central Tendency and Dispersion questions
Group A contains 20 observations with a mean of 15, while Group B contains 30 observations with a mean of 25. What is the combined mean?
Which measure of central tendency is generally least affected by an extreme value?
For the ordered data 3, 5, 7, 9, 11, 13, 15 and 17, what is the interquartile range?
What is the harmonic mean of 2 and 6?
What is the range of the data set 7, 11, 13, 19 and 25?
What is the sample variance of the values 3, 5 and 7?