A population has a very high proportion of young people. Its crude death rate may be low even if age-specific death rates are high because:
A. Migration of elderly lowers CDR.
B. Young populations have higher immunity.
C. It is due to statistical error.
D. Death rates are high at older ages, and few old people exist.
Answer: Option D
Solution (By JKSSB Mock Tests)
CDR is a weighted average of age-specific rates; with few elderly, the high mortality rates of old age receive less weight.
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