Where to apply for MSc depending on GPA? I am an engineering undergrad in my third year. The question that I am asking might sound like a duplicate but I seek some rough statistics. What classification might be roughly correct for institutions offering MSc degree for their average acceptation GPAs?

To visualize, I do not expect a 2.8/4 average student to be accepted to MIT except extreme cases. Would it be "roughly" correct to make a tabulation as follows:

top-20:   3.7/4

top-50:   3.5/4

top-100:   3.3/4

top-200:  3.0/4

I am aware of that it lacks real statistical information and there are many external factors shaping this kind of generalization, however, it would be helpful for making "realistic" degree applications. Any improvement would be appreciated.
Even at the Masters level, graduate admissions are just not that simple and one-dimensional.  GPA is not directly comparable between schools, since different schools have different qualities and different ways of calculating GPA (often even within a single country: GPA is computed many different ways in the US).  Expect your entire record to be scrutinized, along with whatever recommendation letters, essays, etc. that you are also asked to provide.  

In short: nobody can tell you where to apply unless they know both you and the programs that you are applying to very well.