[Retracted] Self-Study System Evaluation of Oral English Based on Limit Theory

Table 3

Oral English of the members of the two groups before the implementation of the questionnaire.

	Number of people	Mean	Standard deviation	Standard error	Minimum	Maximum
Test group	60	37.1213	9.35012	1.21522	21	60
Control group	60	38.5137	10.01023	1.25367	10	60
Total	120	37.6215	9.73162	0.95312	10	60