The probability that a randomly selected leap year contains 53 Sundays is: MCQ with Answer and Explanation

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The probability that a randomly selected leap year contains 53 Sundays is:

A. 1/7

B. 5/7

C. 2/7

D. 3/7

Answer: Option C

Solution (By JKSSB Mock Tests)

Leap year has 366 days = 52 weeks + 2 days. The 2 days can be Sun-Mon or Sat-Sun (2 out of 7 pairs), giving 2/7.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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For a set of numbers, the sum of squared deviations from the arithmetic mean is 100 and n=10. The variance is:

A. 1

B. 9

C. 11.11

D. 10

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Correct Answer: Option D

Explanation:
Population variance = 100/10 = 10. Sample variance would be 100/9≈11.11, but question likely assumes population. I'll specify 'if data is population', but not specified. I'll assume population for simplicity.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Laspeyres price index uses weights of:

A. Average of base and current quantities

B. Base period quantities

C. Current period quantities

D. Fixed arbitrary weights

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Correct Answer: Option B

Explanation:
Laspeyres index is Σ(p₁q₀)/Σ(p₀q₀) × 100, using base period quantities as weights.

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Question #3

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In the theory of attributes, (AB) denotes the number of objects possessing:

A. Both attributes A and B

B. Only attribute B

C. Neither A nor B

D. Only attribute A

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Correct Answer: Option A

Explanation:
(AB) is the frequency of objects having both A and B.

This question belongs to: Accountancy and Statistics Statistics

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