Assignment # 4b- Calculate fertility measures.

Calculate the GROSS REPRODUCTION RATE, NET REPRODUCTION RATE,
and LENGTH OF A GENERATION for US, 1980.

(1)      (2)      (3)      (4)      (5)      (6)      (7)      (8)
                  GROSS REPRODUCTION RATE    NET REPRODUCTION RATE
AGE      Mid-point         fB/B     (No      5Lx/     (assumes
            of             *        mortality100,000  mortality
AGE         age   ASFRs    ASFRs    5*(4)             10*(6)   (5)*(7)  (2)*(8)
15-19        17.5 0.054004 0.026307 0.131535
20-24        22.5 0.115077 0.056057 0.280287
25-29        27.5 0.112908 0.055001 0.275004
30-34        32.5 0.061948 0.030177 0.150884
35-39        37.5 0.019819 0.009654 0.048272
40-44        42.5 0.003873 0.001887 0.009433
45-49        47.5 0.000210 0.000102 0.000511
                  0.367839          0.895927

(fB/B)   =         3612258  1759642 0.487130

LENGTH OF GENERATION




ANSWERS TO GRR & NRR.


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