Digby
The variance/sill relationship is theoretical and does
not depend on the layout of the samples, regular or
clustered. Since the sill only uses pairs where
samples are uncorrelated from one another, the
clustering is irrelevant.
It does depend on the distribution of the samples
values being
Like Isobel mentioned, the sill only uses pairs where samples are
uncorrelated from one another, and in this case the clustering is
irrelevant.
And I totally agree with that. The crucial thing, Digby, is that you want
to make sure the variance estimated reflects the characteristic of what
you
Isobel,
Thankyou, in relation to Colins work then the variance
may be estimated from the sill of the variograms for
the two orebodies and if the two orebodies had lognormal
distributions, they may have a different mean and variance,
but may still display the proportional effect, i.e. similar
