Table 6.

ANOVA estimates for DBM variance components

DBM model parameter	Estimate
${\sigma }_R^2$	$\frac{1}{tc}\left[\text{MS}(\text{R})-\text{MS}(\text{T}\ast \text{R})-\text{MS}(\text{R}\ast \text{C})+\text{MS}(\text{T}\ast \text{R}\ast \text{C})\right]$
${\sigma }_C^2$	$\frac{1}{tr}\left[\text{MS}(\text{C})-\text{MS}(\text{T}\ast \text{C})-\text{MS}(\text{R}\ast \text{C})+\text{MS}(\text{T}\ast \text{R}\ast \text{C})\right]$
${\sigma }_{\tau R}^2$	$\frac{1}{c}\left[\text{MS}(\text{T}\ast \text{R})-\text{MS}(\text{T}\ast \text{R}\ast \text{C})\right]$
${\sigma }_{\tau C}^2$	$\frac{1}{r}\left[\text{MS}(\text{T}\ast \text{C})-\text{MS}(\text{T}\ast \text{R}\ast \text{C})\right]$
${\sigma }_{RC}^2$	$\frac{1}{t}\left[\text{MS}(\text{R}\ast \text{C})-\text{MS}(\text{T}\ast \text{R}\ast \text{C})\right]$
${\sigma }_{\tau RC}^2+{\sigma }_{\epsilon }^2$	MS(T*R*C)

Note: These estimates, except for the last, can be negative.