General Spatial Stats Concepts Pt 1 Flashcards

1
Q

Complete spatial randomness

A

No clustering or dispersion
entirely random distribution

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2
Q

Delaunay triangles

A

Builds Thiessen polygons from each feature

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3
Q

Distance band (or threshold distance)

A

plugged into a distance method like inverse distance or fixed distance

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4
Q

Ecological fallacy

A

assumes that an association found at an aggregated scale also applies at a finer scale

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5
Q

Fixed distance method

A

takes and counts features within a specified distance

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6
Q

Geographic weighting

A

assigns weights to neighbors based on distance

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7
Q

Hexagonal binning

A

creates an even grid of hexagons across the study area and counts the number of points per hexagon

good for lots of points

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8
Q

Gerrymandering

A

electoral district boundaries are manipulated to benefit one party

MAUP

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9
Q

Non-stationarity

A

data is not the same across the space

single regression model does not fit across the whole space

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10
Q

MAUP

A

modifiable areal unit problem

even if you don’t change scale, data can be manipulated if boundaries change

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11
Q

Stationarity

A

consistent across space with no local variation

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12
Q

Zone of indifference

A

Combination of distance threshold + inverse distance

Takes a threshold under which all values are counted the same and then an inverse distance model is applied

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