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Social statistics is the use of statistical measurement systems to study human behavior in a social environment. This can be accomplished through polling a group of people, evaluating a subset of data obtained about a group of people, or by observation and statistical analysis of a set of data that relates to people and their behaviors.
Social scientists use social statistics for many purposes, including:
- the evaluation of the quality of services available to a group or organization,
- analyzing behaviors of groups of people in their environment and special situations,
- determining the wants of people through statistical sampling.
Adolph Quetelet was a proponent of social physics. In his book Physique sociale he presents distributions of human heights, age of marriage, time of birth and death, time series of human marriages, births and deaths, a survival function for humans and curve describing fecundity as a function of age. He also developed the Quetelet Index.
Francis Ysidro Edgeworth published "On Methods of Ascertaining Variations in the Rate of Births, Deaths, and Marriages" in 1885  which uses squares of differences for studying fluctuations and George Udny Yule published "On the Correlation of total Pauperism with Proportion of Out-Relief " in 1895. 
A numerical calibration for the fertility curve was given by Karl Pearson in 1897 in his The Chances of Death, and Other Studies in Evolution . In this book Pearson also uses standard deviation, correlation and skewness for studying humans.
Statistics and statistical analyses have become a key feature of social science: statistics is employed in economics, psychology, political science, sociology and anthropology. The use of statistics has become so widespread in the social sciences that many universities such as Harvard, have developed institutes focusing on "quantitative social science." Harvard's Institute for Quantitative Social Science focuses mainly on fields like political science that incorporate the advanced causal statistical models that Bayesian methods provide. However, some experts in causality feel that these claims of causal statistics are overstated. There is a debate regarding the uses and value of statistical methods in social science, especially in political science, with some statisticians questioning practices such as data dredging that can lead to unreliable policy conclusions of political partisans who overestimate the interpretive power that non-robust statistical methods such as simple and multiple linear regression allow. Indeed, an important axiom that social scientists cite, but often forget, is that "correlation does not imply causation." For example, it appears widely accepted that the lower numbers of women in decision making positions in politics, business and science is good evidence of gender discrimination. But where men suffer adverse statistical indicators such as greater imprisonment rates or a higher suicide rate, that is not usually accepted as evidence of gender bias acting against them.
Methods and concepts used in quantitative social sciences include:
Statistical techniques include:
- Regression analysis
- Classification analysis
- Path analysis
- Factor analysis
- Bayesian statistics
- Canonical correlation
- Causal analysis
- Cluster analysis
- Cohort analysis
- Linear discriminant analysis
- Log-linear analysis
- Probit and logit
- Multidimensional scaling
- Stochastic process
- Structural Equation Modeling
- Multilevel models
- Latent class model
- Item response theory
- Blalock, H.M. Jr, ed. (1974), Measurement in the Social Sciences, Chicago, Illinois: Aldine Publishing, ISBN 0-202-30272-5, retrieved 10 July 2010
- S. Kolenikov, D. Steinley, L. Thombs (2010), Statistics in the Social Sciences: Current Methodological Developments, WileyCS1 maint: multiple names: authors list (link)
- Blalock, Hubert M (1979), Social Statistics, New York: McGraw-Hill, ISBN 0-07-005752-4
- Irvine, John, Miles, Ian, Evans, Jeff, (editors), "Demystifying Social Statistics ", London : Pluto Press, 1979. ISBN 0-86104-069-4
- Miller, Delbert C., & Salkind, Neil J (2002), Handbook of Research Design and Social Measurement, California: Sage, ISBN 0-7619-2046-3, retrieved 10 July 2010CS1 maint: multiple names: authors list (link)
- A. Quetelet, Physique Sociale, https://archive.org/details/physiquesociale00quetgoog
- Edgeworth, F. Y. (1885). "On Methods of Ascertaining Variations in the Rate of Births, Deaths, and Marriages". Journal of the Statistical Society of London. 48 (4): 628–649. doi:10.2307/2979201. JSTOR 2979201.
- Yule, G. U. (1895). "On the Correlation of total Pauperism with Proportion of Out-Relief". The Economic Journal. 5 (20): 603–611. doi:10.2307/2956650. JSTOR 2956650.
- K. Pearson, The Chances of Death, and Other Studies in Evolution, 1897 https://archive.org/details/chancesdeathand00peargoog
- Pearl, Judea 2001, Bayesianism and Causality, or, Why I am only a Half-Bayesian, Foundations of Bayesianism, Kluwer Applied Logic Series, Kluwer Academic Publishers, Vol 24, D. Cornfield and J. Williamson (Eds.) 19-36.
- J. Pearl, Bayesianism and causality, or, why I am only a half-bayesian http://ftp.cs.ucla.edu/pub/stat_ser/r284-reprint.pdf
- Miller, Delbert C., & Salkind, Neil J (2002), Handbook of Research Design and Social Measurement, California: Sage, ISBN 0-7619-2046-3CS1 maint: multiple names: authors list (link)
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- Social science statistics centers
- Center for Statistics and Social Sciences, University of Washington
- Center for the Promotion of Research Involving Innovative Statistical Methodology, New York University, NY
- Centre for Research Methods, Faculty of Social Sciences, University of Helsinki, Finland
- Cornell Institute for Social and Economic Research
- Harvard Institute for Quantitative Social Science
- Inter-University Consortium for Political and Social Research
- National Centre for Research Methods, UK
- Odum Institute for Research in Social Sciences, University of North Carolina, Chapel Hill
- Social Science Statistics Center, University of Missouri, Columbia
- Social Statistics Department, University of Manchester
- Social Statistics Division, School of Social Sciences, University of Southampton, UK
- Statistical databases for social science
- Inter-University Consortium for Political and Social Research
- UN Statistics Division- Demographic and Social Statistics
- Organisation for Economic Co-Operation and Development (OECD)
- US Bureau of Labor Statistics
- International Labour Organisation- LABORSTA
- Labor Research Association- Statistics for Labor Economics
- Labor and Worklife Program- Labor Stats at Harvard Law School
- Social Statistics 2.0