Ultimate class frequencies in a three-attribute system (A, B, C) refer to frequencies of classes like: MCQ with Answer and Explanation

Ultimate class frequencies in a three-attribute system (A, B, C) refer to frequencies of classes like:
A. (A), (B), (C)
B. N only
C. (ABC), (ABγ), (AβC), (αBC), etc.
D. (AB), (AC), (BC)
Answer: Option C
Solution (By JKSSB Mock Tests)
Ultimate class frequencies are the most detailed categories where each unit is classified by the presence or absence of every attribute, e.g., (ABC) for possessing all three, (ABγ) for A and B present but C absent.

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Practice More Statistics Questions

Question #1
Age-Specific Fertility Rate for 25-29 years is 120 per 1,000 women. This means:
A. Women in this age group have 120 children on average
B. 12% of women aged 25-29 give birth each year
C. 120 is the total fertility rate contribution from this age group
D. For every 1,000 women aged 25-29, there are 120 live births in a year

Correct Answer: Option D


Explanation:
ASFR = (Births to women in age group / Women in age group) × 1,000. An ASFR of 120 indicates 120 annual births per 1,000 women aged 25-29, reflecting age-specific fertility intensity.

This question belongs to: Accountancy and Statistics Statistics
Question #2
For mutually exclusive events A and B with P(A)=0.4, P(B)=0.3, P(A∪B) is:
A. 0.12
B. 0.1
C. 0.58
D. 0.7

Correct Answer: Option D


Explanation:
Since A and B are mutually exclusive, P(A∪B) = P(A) + P(B) = 0.7.

This question belongs to: Accountancy and Statistics Statistics
Question #3
Which principle is violated if a questionnaire contains the question 'What is your income and how many children do you have?'
A. Avoid leading questions
B. Proper sequence
C. Simplicity
D. Avoid double-barreled questions

Correct Answer: Option D


Explanation:
A double-barreled question asks about two different things at once, making it impossible to answer accurately for one part.

This question belongs to: Accountancy and Statistics Statistics