where does the intra cluster link occur? what are the sources of within-cluster correlation why is the intergroup correlation different what is the source of the within cluster correlation what is the source of clustering why is it important to use a statistical model of cluster stability? which is an example of intra cluster correlation? when we assume the source of the cluster, we assume that where do we find the source of within cluster correlation? what type of model is the in the cluster? can shocks be used to calculate inter group correlation? why is the intra cluster correlation model important what is the model of shocks is an example of a group shock how to find source of clustering defining what kind of model for determining within cluster what is the source of within cluster correlation which model allows the use of shocks in the cluster? which type of correlation is found between the indexed groups? what is the source of the intra cluster correlation