Table 7. Differences in consciousness for prevention of removal of topsoil layer of landscape trees among the plactitioner of planting construction, in s. Korea.(one-way, ANOVA)

Division	Average	Standard deviation	Significance probability
By age	4.29	0.798	0.000***
By occupation	4.25	0.769	0.004**
By job type	4.58	0.703	0.604
By job position	4.58	0.699	0.837
By working area	4.39	0.828	0.041*
By work experience	4.59	0.555	0.209

P <0.05
P <0.01
P <0.001