Cultivating Iranian IELTS Candidates’ Writing Skills through Online Peer Feedback: A Mixed-Methods Inquiry

Table 5

Univariate tests.

	Sum of squares	df	Mean square	F	Sig.	Partial eta squared
Contrast	187.423	1	187.423	48.301	0.000	0.689
Error	76.762	24	4.001

F tests the effect of instruction. This test is based on the linearly independent pairwise comparisons among the estimated marginal means.