Research on the Application of Blackboard Writing Images in College English Writing Teaching Aided by “POA” Theory

Table 1

Independent sample t-test results for the overall score of the pretest composition in the control class and the experimental class.

Class	Number of cases	Mean	Standard deviation	T value	P value
Control class	42	8.29	2.540	−0.212	0.832
Experimental class	40	8.40	2.318	−0.001	0.001