Table 3. Determination of minimum sample size requirement for performing Cronbach’s alpha test.

k	CA0	CA1	No.	k	CA0	CA1	No.	k	CA0	CA1	No.
2	0.0	0.5	68	8	0.0	0.5	37	30	0.0	0.5	33
		0.6	40			0.6	22			0.6	19
		0.7	24			0.7	13			0.7	12
		0.8	15			0.8	8			0.8	7
3	0.0	0.5	50	9	0.0	0.5	36	35	0.0	0.5	33
		0.6	29			0.6	21			0.6	19
		0.7	18			0.7	13			0.7	12
		0.8	11			0.8	8			0.8	7
4	0.0	0.5	44	10	0.0	0.5	36	40	0.0	0.5	33
		0.6	26			0.6	21			0.6	19
		0.7	16			0.7	13			0.7	12
		0.8	9			0.8	8			0.8	7
5	0.0	0.5	41	15	0.0	0.5	34	45	0.0	0.5	33
		0.6	24			0.6	20			0.6	19
		0.7	14			0.7	12			0.7	12
		0.8	9			0.8	8			0.8	7
6	0.0	0.5	39	20	0.0	0.5	34	50	0.0	0.5	33
		0.6	23			0.6	20			0.6	19
		0.7	14			0.7	12			0.7	12
		0.8	8			0.8	7			0.8	7
7	0.0	0.5	38	25	0.0	0.5	33	55	0.0	0.5	33
		0.6	22			0.6	20			0.6	19
		0.7	13			0.7	12			0.7	12
		0.8	8			0.8	7			0.8	7

k refers to number of test items.

CA₀ refers to value of Cronbach’s alpha coefficient in the null hypothesis.

CA₁ refers to value of Cronbach’s alpha coefficient in the alternative hypothesis.