What is the primary advantage of the Weighted Arithmetic Mean over the Simple Arithmetic Mean? MCQ with Answer and Explanation

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What is the primary advantage of the Weighted Arithmetic Mean over the Simple Arithmetic Mean?

A. It can be calculated for qualitative data

B. It ignores extreme values

C. It is easier to calculate

D. It gives appropriate importance to different items based on their significance

Answer: Option D

Solution (By JKSSB Mock Tests)

Weighted mean assigns weights proportional to the relative importance of items, providing a more accurate average.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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For inclusive class intervals like 10-19, 20-29, the true class boundaries are obtained by:

A. Adding 0.5 to both limits

B. Leaving them unchanged

C. Subtracting 0.5 from lower limit and adding 0.5 to upper limit

D. Subtracting 0.5 from both limits

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Correct Answer: Option C

Explanation:
Inclusive series have gaps; adjusting by half the gap (0.5) gives continuous boundaries: 9.5-19.5, 19.5-29.5, etc.

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Question #2

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Which of the following errors is exclusively associated with the collection of secondary data?

A. Sampling bias

B. Non-response error

C. Inappropriateness to the objective of the current study

D. Measurement error

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Correct Answer: Option C

Explanation:
Secondary data was originally collected for a different purpose, hence it might not strictly align with the current study's objectives.

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Question #3

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A mode can be located graphically with the help of a:

A. Histogram

B. Bar chart

C. Frequency Curve

D. Ogive

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Correct Answer: Option A

Explanation:
By drawing a histogram, the mode is found by joining the top corners of the highest rectangle to the adjacent rectangles.

This question belongs to: Accountancy and Statistics Statistics

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