M?c dù thao tác ??ng nh?p th??ng r?t ??n gi?n, nh?ng n?u thi?u c?n tr?ng, b?n có th??g?p ph?i nh?ng r?c r?i không mong mu?n. Do v?y, hãy l?u ý m?t s???i?m sau ?ây khi th?c hi?n ??ng nh?p: Median Age is the common age from the populace. Fifty percent from the populace is more mature and one other half is younger. Gender is self-reported by p