Table 4.

Two-way ANOPA table.

	SS	df	MS	F	p-value
Between group	0.0611	5
Moment (P)	0.0017	1	0.0017	0.5010	0.4791
SES (Q)	0.0445	2	0.0222	6.3949	0.0017
P × Q	0.0149	2	0.0074	2.1400	0.1177
Error	-	∞	0.0035

Using William's correction for factor P, c_P = 1.0011, we obtain F_{(1, ∞)} = 0.5004, p = 0.4793, for factor Q, c_Q = 1.0015, we obtain F_{(2, ∞)} = 6.3853, p = 0.0017, and for factor P × Q, c_{P × Q} = 1.0066, we obtain F_{(2, ∞)} = 2.1261, p = 0.1193.