For two attributes A and B, if (A)=80, (B)=70, N=100, and they are independent, then (AB) should be: MCQ with Answer and Explanation

For two attributes A and B, if (A)=80, (B)=70, N=100, and they are independent, then (AB) should be:

A. 56

B. 80

C. 70

D. 50

Answer: Option A

Expected (AB) = (80×70)/100 = 56.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

Data classified based on geographical areas such as countries, states, or cities is known as:

A. Qualitative classification

B. Chronological classification

C. Spatial classification

D. Quantitative classification

Correct Answer: Option C

Explanation:
Spatial or geographical classification groups data according to physical locations or regions.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

The schedule is preferred when:

A. The budget is extremely low

B. The area is very small

C. The respondents are highly educated

D. The respondents are illiterate and data accuracy is important

Correct Answer: Option D

Explanation:
Enumerators can explain and record answers, ensuring good quality data from illiterate respondents.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

A bag contains 3 red and 4 black balls. If two balls are drawn at random without replacement, what is the probability that both are red?

A. 1/7

B. 3/14

C. 2/7

D. 9/49

Correct Answer: Option A

Explanation:
P(Both Red) = (3/7) × (2/6) = 6/42 = 1/7.

This question belongs to: Accountancy and Statistics Statistics