In a continuous frequency distribution, the class interval '10-20' means the class includes: MCQ with Answer and Explanation

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In a continuous frequency distribution, the class interval '10-20' means the class includes:

A. Values greater than 20

B. Only the values 10 and 20

C. Values from 10 up to exactly 20

D. Values from 10 up to but not including 20 (in an exclusive series)

Answer: Option D

Solution (By JKSSB Mock Tests)

In standard exclusive class intervals, the lower limit is included, but the upper limit is excluded and falls into the next class.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

In demography, 'cohort' refers to:

A. All women of reproductive age

B. A group of people born in the same year or period

C. All people living in a country

D. A sample of the population

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Correct Answer: Option B

Explanation:
A cohort is a group sharing a common temporal experience, like birth year.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Which test of index numbers is violated by Laspeyres index?

A. Factor reversal test

B. Circular test

C. Unit test

D. Time reversal test

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Correct Answer: Option D

Explanation:
Laspeyres does not satisfy time reversal test; P₀₁(L) × P₁₀(L) ≠ 1.

This question belongs to: Accountancy and Statistics Statistics

Question #3

The formula for a simple aggregative price index is:

A. (Σp₁q₁ / Σp₀q₁) × 100

B. (Σp₁ / Σp₀) × 100

C. (Σp₁q₀ / Σp₀q₀) × 100

D. √(L×P) × 100

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Correct Answer: Option B

Explanation:
Simple aggregative index sums prices without weights.

This question belongs to: Accountancy and Statistics Statistics

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