Which of the following statements about demography is true?
A. Demography studies only population size.
B. Migration does not affect population change.
C. Vital statistics do not include marriages.
D. Census is a demographic tool for complete enumeration.
Answer: Option D
Solution (By JKSSB Mock Tests)
Census is a complete count of a population. Demography also studies composition, distribution; vital statistics includes marriages; migration affects population change.
Explanation:
Continuous variables (e.g., height, income) require quantitative classification using exclusive class intervals to avoid overlap and ensure each observation falls into exactly one class.
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