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Variables Details
: (EM-653)
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EM Identity and Description
| EM-653 | |
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Document Author
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Cordell H. K., V. Heboyan, F. Santos, J. C. Bergstrom |
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Document Year
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2011 |
Variable General Info
Natural log of average annual per capita income ?Comment:This measure of income is calculated as the personal income of the residents of a given area divided by the resident population of the area. In computing per capita personal income, BEA uses the Census Bureau’s annual midyear population estimates. Per capita income in Regional Economic Information System (REIS) Data developed by the Bureau of Economic Analysis (BEA). |
Natural log of percent water area ?Comment:Natural log of percent of water area of county i. Annualized water area values in acres are divided with the total number of acres per county to obtain percent water area in county i at year j. |
Natural log of population density ?Comment:Population is computed by dividing the total population within a geographic entity (for example, United States, state, county, place) by the land area of that entity measured in square kilometers or square miles. Density is expressed as ‘‘people per square kilometer’’ and ‘‘people per square mile’’ of land area. Calculated from U S Census population data. |
Per capita federal designated land within 100 mile radius ?Comment:Federal designated land within a hundred mile radius of county i at year j. A land ownership category designating land that is owned by the Federal government. It does not include, for example, trust lands administered by the Bureau of Indian Affairs or Tennessee Valley Authority (TVA) land. No data are collected for any year that land is in this ownership. |
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Variable ID
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15301 | 15266 | 15296 | 15261 |
| Lnpcy | Lnpwater | lnpd | lnpcfd100 | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal | Cardinal | Cardinal | Cardinal |
| Not reported | Not reported | Not reported | acres per capita |
Variable Typology
Natural log of average annual per capita income ?Comment:This measure of income is calculated as the personal income of the residents of a given area divided by the resident population of the area. In computing per capita personal income, BEA uses the Census Bureau’s annual midyear population estimates. Per capita income in Regional Economic Information System (REIS) Data developed by the Bureau of Economic Analysis (BEA). |
Natural log of percent water area ?Comment:Natural log of percent of water area of county i. Annualized water area values in acres are divided with the total number of acres per county to obtain percent water area in county i at year j. |
Natural log of population density ?Comment:Population is computed by dividing the total population within a geographic entity (for example, United States, state, county, place) by the land area of that entity measured in square kilometers or square miles. Density is expressed as ‘‘people per square kilometer’’ and ‘‘people per square mile’’ of land area. Calculated from U S Census population data. |
Per capita federal designated land within 100 mile radius ?Comment:Federal designated land within a hundred mile radius of county i at year j. A land ownership category designating land that is owned by the Federal government. It does not include, for example, trust lands administered by the Bureau of Indian Affairs or Tennessee Valley Authority (TVA) land. No data are collected for any year that land is in this ownership. |
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Predictor-Intermediate-Response
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Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
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Predictor Variable Type
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Not applicable | Not applicable | Not applicable | Not applicable |
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Response Variable Type
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Not applicable | Not applicable | Not applicable | Not applicable |
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Data Source/Type
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Not applicable | Not applicable | Not applicable | Not applicable |
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Variable Classification Hierarchy
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3. Human Demographic Data |
2. Land Surface (or Water Body) Cover, Use, Substrate, or Metric |
3. Human Demographic Data |
1. Policy Regarding Use or Management of Ecosystem Resources |
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--Economic |
--Land use/land cover type or dominant habitat type |
--Land parcel-specific policies (e.g., regarding parcel use, development, protection, management) |
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----Water bodies |
----Other, multiple, unspecified or unclear |
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------Other, multiple, unspecified or unclear |
Variable Spatial Characteristics
Natural log of average annual per capita income ?Comment:This measure of income is calculated as the personal income of the residents of a given area divided by the resident population of the area. In computing per capita personal income, BEA uses the Census Bureau’s annual midyear population estimates. Per capita income in Regional Economic Information System (REIS) Data developed by the Bureau of Economic Analysis (BEA). |
Natural log of percent water area ?Comment:Natural log of percent of water area of county i. Annualized water area values in acres are divided with the total number of acres per county to obtain percent water area in county i at year j. |
Natural log of population density ?Comment:Population is computed by dividing the total population within a geographic entity (for example, United States, state, county, place) by the land area of that entity measured in square kilometers or square miles. Density is expressed as ‘‘people per square kilometer’’ and ‘‘people per square mile’’ of land area. Calculated from U S Census population data. |
Per capita federal designated land within 100 mile radius ?Comment:Federal designated land within a hundred mile radius of county i at year j. A land ownership category designating land that is owned by the Federal government. It does not include, for example, trust lands administered by the Bureau of Indian Affairs or Tennessee Valley Authority (TVA) land. No data are collected for any year that land is in this ownership. |
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Spatial Extent Area
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>1,000,000 km^2 | >1,000,000 km^2 | >1,000,000 km^2 | >1,000,000 km^2 |
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Spatially Distributed?
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Yes | Yes | Yes | Yes |
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Observations Spatially Patterned?
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Yes | Yes | Yes | Yes |
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Spatial Grain Type
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map scale, for cartographic feature | map scale, for cartographic feature | map scale, for cartographic feature | map scale, for cartographic feature |
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Spatial Grain Size
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varies | varies | varies | varies |
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Spatial Density
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Not applicable | Not applicable | Not applicable | Not applicable |
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EnviroAtlas URL
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Employment Rate |
Variable Temporal Characteristics
Natural log of average annual per capita income ?Comment:This measure of income is calculated as the personal income of the residents of a given area divided by the resident population of the area. In computing per capita personal income, BEA uses the Census Bureau’s annual midyear population estimates. Per capita income in Regional Economic Information System (REIS) Data developed by the Bureau of Economic Analysis (BEA). |
Natural log of percent water area ?Comment:Natural log of percent of water area of county i. Annualized water area values in acres are divided with the total number of acres per county to obtain percent water area in county i at year j. |
Natural log of population density ?Comment:Population is computed by dividing the total population within a geographic entity (for example, United States, state, county, place) by the land area of that entity measured in square kilometers or square miles. Density is expressed as ‘‘people per square kilometer’’ and ‘‘people per square mile’’ of land area. Calculated from U S Census population data. |
Per capita federal designated land within 100 mile radius ?Comment:Federal designated land within a hundred mile radius of county i at year j. A land ownership category designating land that is owned by the Federal government. It does not include, for example, trust lands administered by the Bureau of Indian Affairs or Tennessee Valley Authority (TVA) land. No data are collected for any year that land is in this ownership. |
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Temporal Extent
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1990-2007 | 1990-2007 | 1990-2007 | 1990-2007 |
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Temporally Distributed?
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Yes | Yes | Yes | Yes |
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Regular Temporal Grain?
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Yes | Yes | Yes | Yes |
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Temporal Grain Size Value
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1 | 1 | 1 | 1 |
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Temporal Grain Size Units
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Year | Year | Year | Year |
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Temporal Density
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Not applicable | Not applicable | Not applicable | Not applicable |
Variable Values
Natural log of average annual per capita income ?Comment:This measure of income is calculated as the personal income of the residents of a given area divided by the resident population of the area. In computing per capita personal income, BEA uses the Census Bureau’s annual midyear population estimates. Per capita income in Regional Economic Information System (REIS) Data developed by the Bureau of Economic Analysis (BEA). |
Natural log of percent water area ?Comment:Natural log of percent of water area of county i. Annualized water area values in acres are divided with the total number of acres per county to obtain percent water area in county i at year j. |
Natural log of population density ?Comment:Population is computed by dividing the total population within a geographic entity (for example, United States, state, county, place) by the land area of that entity measured in square kilometers or square miles. Density is expressed as ‘‘people per square kilometer’’ and ‘‘people per square mile’’ of land area. Calculated from U S Census population data. |
Per capita federal designated land within 100 mile radius ?Comment:Federal designated land within a hundred mile radius of county i at year j. A land ownership category designating land that is owned by the Federal government. It does not include, for example, trust lands administered by the Bureau of Indian Affairs or Tennessee Valley Authority (TVA) land. No data are collected for any year that land is in this ownership. |
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| Not reported | Not reported | Not reported | acres per capita | |
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Min Value
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8.33 | -8.00 | -2.71 | -5.52 |
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Max Value
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11.44 | 4.51 | 11.16 | 10.07 |
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Other Value Type
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Mean | Mean | Mean | Mean |
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Other Value
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9.90 | -0.04 | 3.68 | 2.60 |
Variable Variability and Sensitivity
Natural log of average annual per capita income ?Comment:This measure of income is calculated as the personal income of the residents of a given area divided by the resident population of the area. In computing per capita personal income, BEA uses the Census Bureau’s annual midyear population estimates. Per capita income in Regional Economic Information System (REIS) Data developed by the Bureau of Economic Analysis (BEA). |
Natural log of percent water area ?Comment:Natural log of percent of water area of county i. Annualized water area values in acres are divided with the total number of acres per county to obtain percent water area in county i at year j. |
Natural log of population density ?Comment:Population is computed by dividing the total population within a geographic entity (for example, United States, state, county, place) by the land area of that entity measured in square kilometers or square miles. Density is expressed as ‘‘people per square kilometer’’ and ‘‘people per square mile’’ of land area. Calculated from U S Census population data. |
Per capita federal designated land within 100 mile radius ?Comment:Federal designated land within a hundred mile radius of county i at year j. A land ownership category designating land that is owned by the Federal government. It does not include, for example, trust lands administered by the Bureau of Indian Affairs or Tennessee Valley Authority (TVA) land. No data are collected for any year that land is in this ownership. |
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Variability Expression Given?
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Yes | Yes | Yes | Yes | ||||
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Variability Metric
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Variability Value
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Variability Units
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Resampling Used?
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Not applicable | Not applicable | Not applicable | Not applicable | ||||
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Variability Expression Used in Modeling?
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No | No | No | No |
Variable Operational Validation (Response Variables only)
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Variable ID
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Validated?
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Validation Approach (within, between, etc.)
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Validation Quality (Qual/Quant)
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Validation Method (Stat/Deviance)
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Validation Metric
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Validation Value
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Validation Units
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Use of Measured Response Data
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