AfrobarometerW
Afrobarometer

The Afrobarometer is a pan-African, independent, non-partisan research network that measures public attitudes on economic, political, and social matters in Africa. Its secretariat headquarters are in Accra, Ghana, registered as a limited company by guarantee by the Registrar-General’s Department.

Anscombe's quartetW
Anscombe's quartet

Anscombe's quartet comprises four data sets that have nearly identical simple descriptive statistics, yet have very different distributions and appear very different when graphed. Each dataset consists of eleven (x,y) points. They were constructed in 1973 by the statistician Francis Anscombe to demonstrate both the importance of graphing data before analyzing it and the effect of outliers and other influential observations on statistical properties. He described the article as being intended to counter the impression among statisticians that "numerical calculations are exact, but graphs are rough."

Comparative Study of Electoral SystemsW
Comparative Study of Electoral Systems

The Comparative Study of Electoral Systems (CSES) is a collaborative research project among national election studies around the world. Participating countries and polities include a common module of survey questions in their national post-election studies. The resulting data are collated together along with voting, demographic, district and macro variables into one dataset allowing comparative analysis of voting behavior from a multilevel perspective.

Hearth taxW
Hearth tax

A hearth tax was a property tax in certain countries during the medieval and early modern period, levied on each hearth, thus by proxy on wealth. It was calculated based on the number of hearths, or fireplaces, within a municipal area and is considered among the first types of progressive tax.

Iris flower data setW
Iris flower data set

The Iris flower data set or Fisher's Iris data set is a multivariate data set introduced by the British statistician, eugenicist, and biologist Ronald Fisher in his 1936 paper The use of multiple measurements in taxonomic problems as an example of linear discriminant analysis. It is sometimes called Anderson's Iris data set because Edgar Anderson collected the data to quantify the morphologic variation of Iris flowers of three related species. Two of the three species were collected in the Gaspé Peninsula "all from the same pasture, and picked on the same day and measured at the same time by the same person with the same apparatus". Fisher's paper was published in the journal, the Annals of Eugenics, creating controversy about the continued use of the Iris dataset for teaching statistical techniques today.

King effectW
King effect

In statistics, economics, and econophysics, the King effect refers to the phenomenon where the top one or two members of a ranked set show up as outliers. These top one or two members are unexpectedly large because they do not conform to the statistical distribution or rank-distribution which the remainder of the set obeys.

National Asian American SurveyW
National Asian American Survey

National Asian American Survey is a nonpartisan organization that conducts representative surveys of the political and social preferences of the Asian American and Pacific Islander population in the United States.

Statistical study of energy dataW
Statistical study of energy data

Energy statistics refers to collecting, compiling, analyzing and disseminating data on commodities such as coal, crude oil, natural gas, electricity, or renewable energy sources, when they are used for the energy they contain. Energy is the capability of some substances, resulting from their physico-chemical properties, to do work or produce heat. Some energy commodities, called fuels, release their energy content as heat when they burn. This heat could be used to run an internal or external combustion engine.

World Values SurveyW
World Values Survey

The World Values Survey (WVS) is a global research project that explores people's values and beliefs, how they change over time, and what social and political impact they have. Since 1981 a worldwide network of social scientists have conducted representative national surveys as part of WVS in almost 100 countries.