GIS Spatial Statistics 2

Question 1

Kernel Density Estimation (KDE) in GIS is primarily used to:

Accepted Answer

Create a smooth continuous surface estimating the density of features

Answer

Convert vector polygon data to raster format

Answer

Calculate Euclidean distances between point pairs

Answer

Join attribute tables based on spatial location

Question 2

Local Indicators of Spatial Association (LISA) are designed to:

Accepted Answer

Identify local spatial clusters and spatial outliers at each feature location

Answer

Produce a single global autocorrelation index for the entire dataset

Answer

Calculate geographic distances using network paths

Answer

Generate random point patterns for simulation

Question 3

In a Complete Spatial Randomness (CSR) test for point patterns, the null hypothesis states that:

Accepted Answer

Point locations are distributed randomly with no spatial dependence

Answer

Point features are significantly clustered in space

Answer

Point features follow a regular lattice-like distribution

Answer

Point features exhibit strong positive spatial autocorrelation

Question 4

The Anselin Local Moran's I classifies locations into which output categories?

Accepted Answer

High-High, Low-Low, High-Low, and Low-High spatial association types

Answer

Hot spots, cold spots, and statistically insignificant areas only

Answer

Positive, negative, and neutral autocorrelation zones

Answer

Dense, sparse, and uniform distribution classes

Question 5

Ripley's K function is used in spatial statistics to:

Accepted Answer

Analyze point pattern clustering or dispersion across multiple distance scales

Answer

Measure polygon shape compactness and regularity

Answer

Assess spatial autocorrelation in raster cell values

Answer

Calculate shortest paths in transportation networks

Question 6

Kriging, as a spatial interpolation method, is used to:

Accepted Answer

Estimate attribute values at unsampled locations using geostatistical methods

Answer

Classify raster pixels into land use categories

Answer

Identify the shortest path between network nodes

Answer

Delineate watershed boundaries from elevation data

Question 7

In geostatistics, a variogram is used to:

Accepted Answer

Quantify how spatial dissimilarity between point pairs changes with increasing distance

Answer

Visualize distortion in different map projections

Answer

Calculate descriptive statistics for polygon areas

Answer

Define the geographic coordinate reference system