Thank you for the comment classmate.

I found an Issues In Educational Research, Vol 16, 2006 entitled Research dilemmas: Paradigms, methods and methodology. when I was searching for R. B. Burns. He said:

Educational research traditionally followed the empirical "objective scientific model" (Burns, 1997, p.3) which utilised quantitative methods of data collection, analysis and reporting modes. In the 1960s there was a move towards a more constructivist approach which allowed for methods which were "qualitative, naturalistic and subjective" (p.3) in nature. It would appear that at the time there was considerable debate regarding the introduction of this form of data collection. This philosophical debate "left educational research divided between two competing methods: the scientific empirical tradition, and the naturalistic phenomenological mode" (Burns, 1997, p.3).

If you want to read more you can use this link http://www.iier.org.au/iier16/mackenzie.html .

Reading this issue helps me a lot to understand the dissertation that I've been reading for while now.  My previous study was in business and quantitive approach is use most of the time in conducting feasibility study and research.  It is a must for a business to show evidence of the study in numbers to prove the gain or the success of its operation, showing the market share and it's growth and development.