A frequency distribution with classes 10-20, 20-30, 30-40 … is called: MCQ with Answer and Explanation

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A frequency distribution with classes 10-20, 20-30, 30-40 … is called:

A. Open-end series

B. Cumulative series

C. Inclusive series

D. Exclusive series

Answer: Option D

Solution (By JKExamLibrary)

The upper limit of a class is the lower limit of the next; an observation equal to the upper limit goes to the next class.

This question belongs to: Accountancy and Statistics Statistics

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Which of the following is a measure of morbidity?

A. Infant mortality rate

B. Life expectancy

C. Incidence rate of a disease

D. Crude death rate

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Correct Answer: Option C

Explanation:
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The total population of a country at a given time is essentially affected by:

A. Mortality only

B. Fertility, Mortality, and Migration

C. Migration only

D. Fertility only

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Correct Answer: Option B

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These three components are the only demographic variables that determine changes in population size.

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The weight in the weighted mean reflects:

A. The frequency of the item

B. The importance of the item

C. The value of the item

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Correct Answer: Option B

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Weights indicate relative significance of each item.

This question belongs to: Accountancy and Statistics Statistics

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