The geometric mean of 1, 2, 4, 8, 16 is: MCQ with Answer and Explanation

The geometric mean of 1, 2, 4, 8, 16 is:
A. 6
B. 5.2
C. 4
D. 3.5
Answer: Option C
Solution (By JKSSB Mock Tests)
Product = 1×2×4×8×16 = 1024. 1024^(1/5) = 4 (since 4^5=1024).

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Practice More Statistics Questions

Question #1
A questionnaire includes the question: 'Don't you agree that government policies have improved rural healthcare?' This question violates which design principle?
A. Maintaining neutrality and avoiding leading questions
B. Avoiding double-barreled questions
C. Mutually exclusive response options
D. Ensuring questions are answerable by all respondents

Correct Answer: Option A


Explanation:
The question is leading because it presupposes agreement and pressures respondents toward a positive response, violating the principle of neutrality in questionnaire design.

This question belongs to: Accountancy and Statistics Statistics
Question #2
The geometric mean is undefined if the data contains:
A. Only fractions
B. Negative numbers and zero
C. Values greater than 1
D. Positive numbers only

Correct Answer: Option B


Explanation:
GM is defined only for positive numbers; zero or negative values are not allowed.

This question belongs to: Accountancy and Statistics Statistics
Question #3
The combined mean of two groups is 55, with n₁=40, mean₁=50. If n₂=60, mean₂ is:
A. 58.33
B. 57.5
C. 59
D. 60

Correct Answer: Option A


Explanation:
55 = (40×50 + 60×x) / 100 → 2000 + 60x = 5500 → 60x = 3500 → x = 58.33.

This question belongs to: Accountancy and Statistics Statistics