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In anthropology and demography, the human sex ratio is the ratio of males to females in a population. More data are available for humans than for any other species, and the human sex ratio is more studied than that of any other species, but interpreting these statistics can be difficult.Like most sexual species, the sex ratio in humans is close to 1:1.

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  • In anthropology and demography, the human sex ratio is the ratio of males to females in a population. More data are available for humans than for any other species, and the human sex ratio is more studied than that of any other species, but interpreting these statistics can be difficult.Like most sexual species, the sex ratio in humans is close to 1:1. In humans, the natural ratio between males and females at birth is slightly biased towards the male sex, being estimated to be about 1.05 or 1.06 or within a narrow range from 1.03 to 1.06 males/per female born. Sex imbalance may arise as a consequence of various factors including natural factors, exposure to pesticides and environmental contaminants, war casualties, sex-selective abortions, infanticides, aging, femicide and problems with birth registration.The sex ratio for the entire world population is 101 males to 100 females (2021 est.). Human sex ratios, either at birth or in the population as a whole, are reported in any of four ways: the ratio of males to females, the ratio of females to males, the proportion of males, or the proportion of females. If there are 108,000 males and 100,000 females the ratio of males to females is 1.080 and the proportion of males is 51.9%. Scientific literature often uses the proportion of males. This article uses the ratio of males to females, unless specified otherwise. (en)
  • Dalam antropologi dan demografi, rasio jenis kelamin manusia adalah rasio perbandingan laki-laki dengan perempuan dalam sebuah populasi. Data yang tersedia untuk manusia melebihi spesies lainnya, dan rasio jenis kelamin manusia lebih dikaji ketimbang spesies lainnya, tetapi penafsiran statistiknya lebih sulit. (in)
  • 性別比是指族群中雄性(男性)對雌性(女性)的比率。「第一性別比」指懷孕時的性別比;「第二性別比」指剛出生嬰兒的性別比;「第三性別比」指所有成熟個體(此指出生後至死亡)的性別比。 人口學上對人類社會或國家中的男女性別比,通常是以每100位女性所對應的男性數目為計算標準。目前的人類二級性別比大約是104位男性對100位女性。而生物學上的性別比,則是以族群中雄性所佔比例來做定義。 (zh)
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  • Dalam antropologi dan demografi, rasio jenis kelamin manusia adalah rasio perbandingan laki-laki dengan perempuan dalam sebuah populasi. Data yang tersedia untuk manusia melebihi spesies lainnya, dan rasio jenis kelamin manusia lebih dikaji ketimbang spesies lainnya, tetapi penafsiran statistiknya lebih sulit. (in)
  • 性別比是指族群中雄性(男性)對雌性(女性)的比率。「第一性別比」指懷孕時的性別比;「第二性別比」指剛出生嬰兒的性別比;「第三性別比」指所有成熟個體(此指出生後至死亡)的性別比。 人口學上對人類社會或國家中的男女性別比,通常是以每100位女性所對應的男性數目為計算標準。目前的人類二級性別比大約是104位男性對100位女性。而生物學上的性別比,則是以族群中雄性所佔比例來做定義。 (zh)
  • In anthropology and demography, the human sex ratio is the ratio of males to females in a population. More data are available for humans than for any other species, and the human sex ratio is more studied than that of any other species, but interpreting these statistics can be difficult.Like most sexual species, the sex ratio in humans is close to 1:1. (en)
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  • Human sex ratio (en)
  • Rasio jenis kelamin manusia (in)
  • 人類性別比 (zh)
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