Evaluating the Content Validity of Grade 10 Mathematics Model Examinations in Oromia National Regional State, Ethiopia

Table 2

The coefficient of concordance (W) observed value of S/x² and the critical value of S^∗/x² associated with W’s significance.

Categories	K	N	Rank total	Mean rank total	Observed value of S/x^2	W	Critical value of S^∗/x^2
Taxonomy of educational domains	8	3	48	16	128	1	48.10
Cognitive domain of learning outcomes	8	6	168	28	1076.50	0.9681	299
Tests’ items to cognitive domain	8	6	168	28	989.50	0.8963	299
Tests’ items to major contents	8	20	1680	84	151.06	0.9938	30.144