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Variables Details
: (EM-653)
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EM Identity and Description
| EM-653 | |
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Document Author
variable.detail.emDocumentAuthorHelp
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Cordell H. K., V. Heboyan, F. Santos, J. C. Bergstrom |
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Document Year
variable.detail.emDocumentYearHelp
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2011 |
Variable General Info
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. |
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Variable ID
variable.detail.varIdHelp
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15295 |
| lnpd | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal |
| Not reported |
Variable Typology
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. |
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Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
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Predictor |
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Predictor Variable Type
variable.detail.displayPredictorVariableTypeHelp
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Time- or Space-varying Variable |
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Response Variable Type
variable.detail.resClassHelp
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Not applicable |
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Data Source/Type
variable.detail.dataTypeHelp
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Map or database (e.g., wide coverage, wide availability, measured or modeled) |
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Variable Classification Hierarchy
variable.detail.vchLevel1Help
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3. Human Demographic Data |
Variable Spatial Characteristics
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. |
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Spatial Extent Area
variable.detail.spExtentHelp
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>1,000,000 km^2 |
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Spatially Distributed?
variable.detail.spDistributedHelp
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Yes |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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Yes |
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Spatial Grain Type
variable.detail.spGrainTypeHelp
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map scale, for cartographic feature |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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varies |
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Spatial Density
variable.detail.spDensityHelp
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Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Variable Temporal Characteristics
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. |
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Temporal Extent
variable.detail.tempExtentHelp
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1990-2007 |
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Temporally Distributed?
variable.detail.tempDistributedHelp
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Yes |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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Yes |
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Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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1 |
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Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Year |
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Temporal Density
variable.detail.tempDensityHelp
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Not applicable |
Variable Values
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. |
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| Not reported | |
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Min Value
variable.detail.minEstHelp
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Not reported |
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Max Value
variable.detail.estHelp
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Not reported |
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Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable |
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Other Value
variable.detail.otherEstHelp
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Not reported |
Variable Variability and Sensitivity
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. |
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Variability Expression Given?
variable.detail.variabilityExpHelp
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No |
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Variability Metric
variable.detail.variabilityMetricHelp
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None |
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Variability Value
variable.detail.variabilityValueHelp
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None |
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Variability Units
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None |
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Resampling Used?
variable.detail.bootstrappingHelp
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Not applicable |
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Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
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Not applicable |
Variable Operational Validation (Response Variables only)
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Variable ID
variable.detail.varIdHelp
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Validated?
variable.detail.resValidatedHelp
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Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
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Validation Quality (Qual/Quant)
variable.detail.validationQualityHelp
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Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
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Validation Metric
variable.detail.validationMetricHelp
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Validation Value
variable.detail.validationValHelp
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Validation Units
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Use of Measured Response Data
variable.detail.measuredResponseDataHelp
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