In attribute theory, if (A)=200, (B)=300, N=1000, and A and B are independent, the expected frequency of (AB) is: MCQ with Answer and Explanation

Question

Share Report Error

In attribute theory, if (A)=200, (B)=300, N=1000, and A and B are independent, the expected frequency of (AB) is:

A. 50

B. 60

C. 200

D. 300

Answer: Option B

Solution (By JKSSB Mock Tests)

Under independence, E(AB) = (A)×(B)/N = 200×300/1000 = 60,000/1000 = 60. This is the product of marginal proportions times total population.

This question belongs to: Accountancy and Statistics Statistics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Statistics Questions

Question #1

Share Report

Total Fertility Rate (TFR) is obtained by summing age-specific fertility rates and multiplying by:

A. 1

B. 1000

C. 10

D. 5 if 5-year age groups are used

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option D

Explanation:
Because each ASFR is per 1000 women for a 5-year span, the sum is multiplied by 5 to give children per woman.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Share Report

Which type of classification is used when data is grouped according to time periods such as years, months, or quarters?

A. Spatial classification

B. Quantitative classification

C. Chronological classification

D. Qualitative classification

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option C

Explanation:
Chronological classification organizes data based on time sequences, enabling analysis of trends, patterns, and changes over specific periods like years or months.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Share Report

Dorbish and Bowley's price index is the:

A. Harmonic mean of Laspeyres and Paasche

B. Geometric mean of Laspeyres and Paasche

C. Arithmetic mean of Laspeyres and Paasche

D. Difference between Laspeyres and Paasche

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option C

Explanation:
Dorbish-Bowley index averages the Laspeyres and Paasche formulas using a simple arithmetic mean: (L + P) / 2.

This question belongs to: Accountancy and Statistics Statistics

Explore All Statistics MCQs