Term
Major Goals of Scientific Inquiry |
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Definition
1) Description
-Data Collection, Classification
2) Prediction
-Based on Inference from existing patterns
3) Explanation
-Prediction of values
4) Control
-Ultimately to change or manipulate physical or social process |
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Term
Basic vs. Applied Research |
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Definition
-Example: GIScience
-Basic Research (Making better GIS techniques and software)
-Applied(Doing environmental studies with GIS) |
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Term
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Definition
-Case: The objects studied
Measurements: How we determine attributes or properties of cases
1) Literacy
-Concepts, writing papers and reports
2) Numeracy
-Measurements, statistical understanding and quantitative analysis
3) Graphicacy
-Interpreting graphs, diagrams, maps and photographs
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Definition
1) Realism enables empiricism
2) Causality moves in a forward direction
-Cause and effect are measurable
3) Simplicity
-Principle of parsimony 'elegant' solutions to problems
4) Skepticism
-Falsification by evidence
5) Quantitative Thinking
-Instruments, mathematical modeling and computation |
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Term
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Definition
-Methods are a major source of historical and modern contention in geography
+Quantitative Vs. Qualitative
+Physical Vs. Human Geography
+Quantitative Human Geography |
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Term
Quantitative and Qualitative |
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Definition
1) Data Collection
-Numeric Data
2) Structure
-Formal, structured research approach
3) Analysis
-Formal analytical methods
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Term
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Definition
-Primary Sources
+First hand data collection
-Secondary
+Census |
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Term
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Definition
-Classification of data
-Qualitative
-Numeric Values refer to classes
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Term
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Definition
-Numeric values describing rank or relative order
-Top rankings
-Rating Scales
+Preferences |
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Term
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Definition
-Relative Quantitative values without a true zero
+Express relative values
-Mathematical relations don't hold true
+Temp.
-Examples
+Temp
+Time
+Lat/Long |
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Term
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Definition
-Typical attribute data
-Mathematical relations hold true
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Term
Cumulative Frequency Tables |
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Definition
-Cumulative frequency: Sum per category
-Relative frequency: Proportion (%)
-Cumulative Relative frequency: Cumulative summation of relative frequency |
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Term
Cumulative Frequency Diagram |
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Definition
-Ogive
+Sums up relative proportions |
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Term
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Definition
1) Physical Measurements
-GPS; Weather Stations
2) Observation of behavior
-Subjects are not explicitly aware of being studied
3) Archival sources
-Older data and photograph
4) Explicit Reports
-People being studied are aware of data collection
-Requires 'self-reporting'
+Surveys
+Open-ended questions
5) Computational Models
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Term
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Definition
-Smaller scale processes 'nested' in larger scale processors
+Nested Scales
+Ex: Local to Global economics, global climate change
+Ex: Remote Sensing Anderson's land cover classification
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Term
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Definition
-Discrete data have defined limits
+Population
-Continuous data can be estimated
+Snowfall interpolation
-Discrete data
+Nominal, Interval
-Continuous
+NOIR |
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Term
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Definition
-Discrete vs. continuous
+50 cm or 50.212cm
-Accuracy: Correctness of measurement
+How close measure to the actual value
-Precision: Sharpness or resolution of measurement
+How repeatable?
-Spurious Precision:
+5.125345634566 inches
+Better to use one decimal place more than the original data |
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Term
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Definition
-Visual Methods
+Histograms, Boxplots
-Measures of Central Tendency
+Mean, Median, Mode
+Absolute Frequency, Relative Frequency
-Variability
+Inter-Quatile range
+Variance and standard deviation
-Descriptive Spatial
-Mean Center
-Distance, Standard distance |
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Term
Measures of Dispersion: Range |
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Definition
-Min and Max
-Symmetric and Skewed Distributions |
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Term
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Definition
-Is a measure of the asymmetry of a histogram
-A perfectly symmetric histogram has a skewness value of zero
-Positive Skew: More observations below the mean than above |
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Term
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Definition
-Is a measure of distribution (Histogram) asymmetry and peaksharpness
-Letokurtic (Thin)
-Mesokurtic (Middle)
-Platykurtic (Flat)
-Index measure of flatness or peakedness in distributions
-High peakedness, Kurtosis > 3.0 (Letokurtic)
-Low peakedness, Kurtosis < 3.0 (Platykurtic) |
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Term
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Definition
-Coefficient of Variation (Relative Variability)- s/x(100)
+Ratio of Standard Deviation to the Mean
+Divide standard deviation by mean to give a standardized value for comparisons |
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Term
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Definition
-Standardizing observations from different distributions and different means
+Z-Score: Subtract a value from the mean and then divide by the standard deviation
+Z-Score gives the number of standard deviations from the mean |
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Term
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Definition
-Use standard scores (Normal deviate) or z-scores
+Can be positive or negative |
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Term
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Definition
-Sample variance s2
+Average squared deviation of observations from the mean
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Term
Methods: Processing spatial data |
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Definition
-Multiple ways to address the same issue
-Points
-Counts
+Discrete Distribution-Point data within discrete areas, choropleth mapping
-Surfaces
+Continuous Distribution Statistical surfaces 'Smoothed' Surfaces
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Term
Modifiable areal unit problem |
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Definition
How you divide space affects the density of the values, alters stats |
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Term
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Definition
-Equal Interval: Divides data into a number of classes of equal width
-Quantile: Data divided so that an equal number of observations falls within each class
-Natural Breaks- Divides data into classes divided from natural breaks in a data histogram |
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