The geometric mean of 4, 9, and 16 is: MCQ with Answer and Explanation

The geometric mean of 4, 9, and 16 is:
A. 10
B. 12
C. 8
D. 9
Answer: Option C
Solution (By JKSSB Mock Tests)
Geometric mean = (4 × 9 × 16)^(1/3) = (576)^(1/3) = 8. It is the nth root of the product of n observations, useful for averaging ratios or growth rates.

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Practice More Statistics Questions

Question #1
In a frequency polygon, the points plotted are:
A. Cumulative frequencies vs upper boundaries
B. Class midpoints vs frequencies
C. Upper limits vs frequencies
D. Lower limits vs frequencies

Correct Answer: Option B


Explanation:
A frequency polygon connects the midpoints of histogram bars at their respective frequencies.

This question belongs to: Accountancy and Statistics Statistics
Question #2
Which formula uses the arithmetic mean of base and current year quantities as weights?
A. Dorbish-Bowley
B. Marshall-Edgeworth
C. Laspeyres
D. Paasche

Correct Answer: Option B


Explanation:
Marshall-Edgeworth uses the sum (or arithmetic average) of quantities from both years: w = (q0 + q1).

This question belongs to: Accountancy and Statistics Statistics
Question #3
A random experiment is defined as:
A. An experiment that can be repeated under identical conditions with uncertain outcomes
B. An experiment with a predetermined outcome
C. An experiment conducted only once
D. An experiment where all outcomes are equally likely

Correct Answer: Option A


Explanation:
A random experiment has well-defined possible outcomes, can be repeated under similar conditions, and the exact outcome cannot be predicted with certainty before performing the experiment.

This question belongs to: Accountancy and Statistics Statistics