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The NESTED Procedure |

*y*_{ijr}- is the value of the dependent variable observed at
the
*r*th replication with the first factor at its*i*th level and the second factor at its*j*th level. - is the overall (fixed) mean of the sampling population.
- are mutually uncorrelated random effects with zero means and respective variances , ,and (the variance components).

Note that PROC NESTED is appropriate for models with only classification effects; it does not handle models that contain continuous covariates. For random effects models with covariates, use either the GLM or MIXED procedure.

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