A sample of undergraduate students grade 1 science, environmental studies. Faculty of environmental and Resource Sciences mahasarakham University is derived by simple random by means of a lottery trial group. The number of 30 people.
The sample of undergraduate students in Year 1 or Problems. Faculty of Environment and Resource Studies All Rights Reserved They were selected by simple random sampling. How to draw a group of 30 people.
The sample is the undergraduate students 1 program in Environmental Studies Faculty of environment and resource studies, University, obtained by random sampling method. By means of the experimental group 30 people.