Model Dimension

Figure 1. Model dimension for autoregressive covariance model
Model dimension for autoregressive covariance model

The fixed effects for this model are identical to those from the random effects model. The random effects portion has been replaced with the repeated effect WEEK. You have specified a First-Order Autoregressive covariance structure, which always takes two parameters. This covariance structure is applied to the levels of WEEK, independently for each of the 351 customers in the study.

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