Statistical Methods: Analysis and Conclusions

It took me all night but I did the assign work of writing. This writing assignment required me to pick two out of three question. i pick first and third question because i understand the question and completed them. The first question is about matching what statistic method on the three question implying the answer and what is the pros and cons of those statistical methods. The third question is proportional and finding the probability on it three question. The first part of this assignment is by do the conventional methods to find the question and knowing assign a label or attribute.
This first question is the easy question and i made my mind on what methods i should pick. I pick a convenience methods even despite the flaws of creating a bias in result of an incompleted conclusion and this convenience methods also it may not represent the views of others student. But the methods itself is very lazy but the way to get people to do the survey by being up in their face and surveying two hunderd out of five thousand student that come to the liberty, really

The other two statistical methods, random and stratified, sound better than the convenience methods. Random statistic methods pros are it easy like convenience