Median Age is the common age of your inhabitants. Half of your inhabitants is older and one other half is younger. Gender is self-noted by men and women when requested regarding their sexual intercourse at delivery.Ki?m tra thông tin k??tr??c khi thanh toán: Ng??i ch?i c?ng nên ki?m tra th?t k??các n?i dung khi ti?n hành thanh toán.??????????