methodology 應該要寫什麼??

我唸左好耐......我都唔知要做咩....
做 methodology 既範圍:
1. scope of the research
2. basic methodology
3. the design and implementation of the inquiry
4. sources of bias
5. limitations of research process

麻煩各位解釋下d 5 點, d part 我唸左好耐都唔知要寫咩, thank you!!