Thanks a lot for your powerful and scientific answer.
I actually collect data from different journal who are works on Plasma spray process and used materials calcium phosphate. As the author change there is a change of equipment. Change of equipment has a little effect of process...
Could you please anyone help me to give me details idea and steps about theoretical research with example.
I am trying to find out a relationship in a process. In literature there is no existing relationship between this process parameters. So I collect data from published journal and plot...