Consistency of attribute data requires that all ultimate class frequencies must be: MCQ with Answer and Explanation

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Consistency of attribute data requires that all ultimate class frequencies must be:

A. Negative

B. Zero

C. Non-negative

D. Equal

Answer: Option C

Solution (By JKSSB Mock Tests)

All ultimate frequencies like (AB), (Aβ), etc., must be ≥ 0 for data to be consistent.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

If P(A|B) = P(A), then events A and B are:

A. Mutually exclusive

B. Independent

C. Exhaustive

D. Complementary

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Correct Answer: Option B

Explanation:
Independence means P(A|B) = P(A).

This question belongs to: Accountancy and Statistics Statistics

Question #2

Crude Birth Rate (CBR) is defined as:

A. Number of births per 1,000 married women

B. Number of births per 100 women of childbearing age

C. Total births divided by total deaths

D. Number of live births per 1,000 mid-year population

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Correct Answer: Option D

Explanation:
CBR = (Number of live births in a year / Mid-year population) × 1,000. It is a simple, widely used measure of fertility, though it does not account for age structure.

This question belongs to: Accountancy and Statistics Statistics

Question #3

If the arithmetic mean of 5 numbers is 20, and the arithmetic mean of another 3 numbers is 28, the combined mean of all 8 numbers is:

A. 22

B. 24

C. 25

D. 23

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Correct Answer: Option D

Explanation:
Combined mean = (5×20 + 3×28) / (5+3) = (100 + 84) / 8 = 184 / 8 = 23. This formula weights each group's mean by its size.

This question belongs to: Accountancy and Statistics Statistics

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