Statistics about populations in terms of percentages of age, gender, density, and socio-economic status, among others, are known as

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The general term for statistics about age, gender, socio-economic status, etc. is demographics. Demographics basically describe the different factors of a population, of individuals, or of groups within populations with statistics. The statistics of demographics are primarily based on population averages of things like income, age and education level. 

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Psychological disorder. transgender disorder

They need to contract and relax