Term Definition Net reproduction rate No. of daughters a newborn girl will bear during her life time assuming fixed age specific feility and moality ratio Gross reproduction rate Average no. of girls that would be born to a woman if she experiences the current feility pattern throughout her reproductive span (15-44 or 49 years), assuming no moality Total marital feility rate Average no. of children that would be born to a married woman if she experiences the current feility pattern throughout her reproductive spam Total feility rate Average no. of children a woman would have if she were to pass through her reproductive bearing children at the same rates as the women now in each age group