Click this link to view O*NET’s Wages and Employment section for Stationary Engineers. According to O*NET, what is the projected growth for this career between 2019–2029? faster than average
little or no change
slower than average
average

Information on the cost of things, quantitative data has to do with numbers, qualitative data uses details such as taste, appearance, what it looks like etc. 

Extrusive;

After spending all that time on the research then by all means modify the hypothesis or aim by reporting such. for example the findings did not bring forth what was expected but brought about different yet interesting findings worth exploring so the hypothesis is changed to reflect this new findings.

i may be way off but.