Geostatistical analysis

8 important questions on Geostatistical analysis

What does knowledge of spatial location provide?

  • Whether those objects vary across space
          = spatial independent?
  • Hypotheses about functioning of objects

What is the aim of spatial statistics?

To reveal the pattern of spatial dependence and the scale of this dependence.

What is a uniform point pattern?

May result from direct interactions between individuals in the population.
  • territoriality
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What is spatial autocorrelation?

Correlation between a value at certain location and the values of close-by locations.

Why does spatial similarity matter?

  • Most analyses: assuming that values of samples are independent of one another
  • Samples taken from nearby areas may be similar to each other and may be not independent (pseudoreplication)

What is the difference between variance and semivariance?

Variance = measures spread in data = dissimilarity between observations and mean

Semivariance = measures dissimilarity between locations

What is an isotropic spatial dissimilarity pattern?

Pattern shows the same magnitude in all directions.

What is an anisotropic spatial dissimilarity pattern?

Spatial pattern that varies according to direction.

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