This menu performs the Mantel test assessing the association between similarity matrices.
Available Data
This lists data structures appropriate to the current input field. The contents will change as you move from one field
to the next. Double-click on a name to copy it to the current input field; alternatively, you can type the name directly
into the input field.
Y Matrix
Provides a space for you to specify a the first distance or similarity matrix: the order of the units of this matrix is held fixed
X Matrix
Provides a space for you to specify a the second distance or similarity matrix: the rows of X are permuted to allow the
significance of the correlation between Y and X to be assessed.
Method
Allows you to select the type of metric by which to compare the distance matrices. You can choose from Correlation
(product-moment correlation), rankcorrelation and Mantel
(sum(X*Y) - originally proposed by Mantel 1967). If the metric rankcorrelation is selected, the data are restricted to non-missing
units and Spearman's rank correlation is used.
Number of permutations
Allows you to specify the number of permutations of the units in the second distance matrix X on which the significance of the
correlation between Y and X is to be based.
Random Seed
Controls the random number seed for the permutations.
See Also