Ecological correlation (original) (raw)
In statistics, an ecological correlation (also spatial correlation) is a correlation between two variables that are group means, in contrast to a correlation between two variables that describe individuals. For example, one might study the correlation between physical activity and weight among sixth-grade children. A study at the individual level might make use of 100 children, then measure both physical activity and weight; the correlation between the two variables would be at the individual level. By contrast, another study might make use of 100 classes of sixth-grade students, then measure the mean physical activity and the mean weight of each of the 100 classes. A correlation between these group means would be an example of an ecological correlation.
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| dbo:abstract | In statistics, an ecological correlation (also spatial correlation) is a correlation between two variables that are group means, in contrast to a correlation between two variables that describe individuals. For example, one might study the correlation between physical activity and weight among sixth-grade children. A study at the individual level might make use of 100 children, then measure both physical activity and weight; the correlation between the two variables would be at the individual level. By contrast, another study might make use of 100 classes of sixth-grade students, then measure the mean physical activity and the mean weight of each of the 100 classes. A correlation between these group means would be an example of an ecological correlation. Because a correlation describes the measured strength of a relationship, correlations at the group level can be much higher than those at the individual level. Thinking both are equal is an example of ecological fallacy. (en) |
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| dbo:wikiPageWikiLink | dbr:Correlation dbc:Covariance_and_correlation dbr:Mean dbr:Geographic_information_science dbr:Statistics dbr:Complete_spatial_randomness dbr:Ecological_fallacy dbr:Ecological_regression dbr:Modifiable_areal_unit_problem dbr:Spatial_econometrics dbr:Spatial_epidemiology dbr:Spatial_autocorrelation |
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| dct:subject | dbc:Covariance_and_correlation |
| gold:hypernym | dbr:Correlation |
| rdfs:comment | In statistics, an ecological correlation (also spatial correlation) is a correlation between two variables that are group means, in contrast to a correlation between two variables that describe individuals. For example, one might study the correlation between physical activity and weight among sixth-grade children. A study at the individual level might make use of 100 children, then measure both physical activity and weight; the correlation between the two variables would be at the individual level. By contrast, another study might make use of 100 classes of sixth-grade students, then measure the mean physical activity and the mean weight of each of the 100 classes. A correlation between these group means would be an example of an ecological correlation. (en) |
| rdfs:label | Ecological correlation (en) |
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