Which of the following statements about demography is true?
A. Migration does not affect population change.
B. Census is a demographic tool for complete enumeration.
C. Demography studies only population size.
D. Vital statistics do not include marriages.
Answer: Option B
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:
GFR restricts the denominator to women aged 15-49, the biologically relevant group for childbearing, providing a more accurate measure of fertility intensity than CBR's total population denominator.
Explanation:
Standard deviation measures dispersion; a larger SD indicates greater variability of observations around the mean, regardless of the mean's value or distribution shape.
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