To calculate the Total Fertility Rate (TFR), we first need to calculate the age-specific fertility rates (ASFR) for each age group, then sum them up. The formula for TFR is:
TFR = (ASFR15-19 + ASFR20-24 + ASFR25-29 + ASFR30-34 + ASFR35-39 + ASFR40-44)
To calculate ASFR for each age group, we use the following formula:
ASFR = (Births to women in age group / Number of women in age group) x 1,000
Let's calculate the ASFR for each age group:
ASFR15-19 = (421 / 10,249) x 1,000 = 41.06
ASFR20-24 = (1040 / 10,181) x 1,000 = 102.15
ASFR25-29 = (1132 / 9,798) x 1,000 = 115.53
ASFR30-34 = (952 / 9,924) x 1,000 = 95.89
ASFR35-39 = (483 / 10,439) x 1,000 = 46.25
ASFR40-44 = (111 / 11,484) x 1,000 = 9.66
Now we can calculate the TFR:
TFR = (41.06 + 102.15 + 115.53 + 95.89 + 46.25 + 9.66) = 410.54
Therefore, the Total Fertility Rate for the US in 2005 is 410.54.
To calculate the General Fertility Rate (GFR), we sum the number of births to women in each age group and divide it by the total number of women of reproductive age:
Total births = 421 + 1040 + 1132 + 952 + 483 + 111 = 4139
Total women of reproductive age = 10,249 + 10,181 + 9,798 + 9,924 + 10,439 + 11,484 = 61,075
GFR = (Total births / Total women of reproductive age) x 1,000 = (4139 / 61,075) x 1,000 = 67.76
Therefore, the General Fertility Rate for the US in 2005 is 67.76.
Question 2. Table 1. US Total Fertility Rate Calculation, 2005
Age groups Number of women Births to women
in age groups
15 – 19 10,249 421
20-24 10,181 1040
25-29 9,798 1132
30-34 9,924 952
35-39 10,439 483
40-44 11,484 111
Compute the Total Fertility Rate and the General Fertility Rate
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1 answer