Consider the following data: | Year | Birthrate | Death rate | |---|---|---| | 1911-1921 | 48.1 | 35.5 | |…

Consider the following data: | Year | Birthrate | Death rate | |---|---|---| | 1911-1921 | 48.1 | 35.5 | | 1921-1931 | 46.4 | 36.3 | | 1931-1941 | 45.2 | 31.2 | | 1941-1951 | 39.9 | 27.4 | | 1951-1961 | 41.7 | 22.8 | | 1961-1971 | 41.1 | 18.9 | | 1971-1981 | 37.1 | 14.8 | For which period was the natural growth rate maximum?
  1. 1911-1921
  2. 1941-1951
  3. 1961-1971
  4. 1971-1981

Solution

Natural growth rate = birthrate − death rate. 1911-1921: $12.6$; 1921-1931: $10.1$; 1931-1941: $14.0$; 1941-1951: $12.5$; 1951-1961: $18.9$; 1961-1971: $22.2$; 1971-1981: $37.1-14.8=22.3$. The maximum value 22.3 is for 1971-1981.

Asked in: CSAT 2020

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