For a frequency distribution with classes 0-10, 10-20, 20-30, the class mark of the second class is: MCQ with Answer and Explanation

For a frequency distribution with classes 0-10, 10-20, 20-30, the class mark of the second class is:

A. 15

B. 25

C. 10

D. 20

Answer: Option A

Midpoint = (10+20)/2 = 15.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

If P(A) = 2/3 and P(B) = 1/2 and A, B are independent, then P(A∩B) is:

A. 1/3

B. 1/6

C. 2/3

D. 1/2

Correct Answer: Option A

Explanation:
2/3 × 1/2 = 1/3.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

Which of the following tests is satisfied by Fisher's ideal index?

A. Circular test

B. Time reversal test

C. Both time reversal and factor reversal tests

D. Factor reversal test

Correct Answer: Option C

Explanation:
Fisher index satisfies both time reversal and factor reversal tests.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

General Fertility Rate (GFR) is the number of live births per:

A. 1000 women of reproductive age (15-49)

B. 1000 total population

C. 1000 live births

D. 1000 married women

Correct Answer: Option A

Explanation:
GFR = (Live births / Women aged 15-49) × 1000, focusing on the population at risk.

This question belongs to: Accountancy and Statistics Statistics