difference between total fertility rate and crude birth rate
Total fertility rate The TFR (or TPFRâ€”total period fertility rate) is a better index of fertility than the crude birth rate (annual number of births per thousand population) because it is independent of the age structure of the population, but it is a poorer estimate of actual completed family size than the total cohort fertility rate, which is obtained by summing the age-specific fertility rates that actually applied to each cohort as they aged through time. In particular, the TFR does not necessarily predict how many children young women now will eventually have, as their fertility rates in years to come may change from those of older women now. However, the TFR is a reasonable summary of current fertility levels.
Bank rate Bank rate, also referred to as the discount rate in American English,[1] is the rate of interest which a central bank charges on the loans and advances to a commercial bank. The bank rate is known by a number of different terms depending on the country and has changed over time in some countries as the mechanism used to manage the rate have changed.