GIS Spatial Statistics

Question 1

What does Moran's I measure in spatial analysis?

Accepted Answer

Spatial autocorrelation of attribute values

Answer

Moran's I measures spatial autocorrelation, indicating the degree to which nearby features have similar attribute values.

Question 2

A spatial weights matrix is used to:

Accepted Answer

Define neighborhood relationships between spatial features

Answer

A spatial weights matrix formally defines which features are considered neighbors and quantifies the strength of their spatial relationships.

Question 3

Spatial autocorrelation, as described by Tobler's First Law, means that:

Accepted Answer

Nearby features tend to have more similar attribute values than distant features

Answer

Tobler's First Law states that near things are more related than distant things, which is the foundation of spatial autocorrelation.

Question 4

Which statistic identifies statistically significant spatial clusters of high values (hot spots) and low values (cold spots)?

Accepted Answer

Getis-Ord Gi* statistic

Answer

The Getis-Ord Gi* statistic produces z-scores and p-values to identify statistically significant hot spots and cold spots in spatial data.

Question 5

The mean center in spatial statistics is defined as:

Accepted Answer

The average of all X and Y coordinates of features in a dataset

Answer

The mean center is calculated as the average of all X coordinates and the average of all Y coordinates, representing the geographic center of the dataset.

GIS - Geographic Information System Practice Test

GIS - Geographic Information System Practice Test

GIS Spatial Statistics