The assignment content discusses the relationship between data and theories, highlighting that new observations lead to determine new linkages and it is a never-ending approach. It also explains the difference between qualitative and quantitative research methods, with the former focusing on understanding reasons, motivations, and opinions, while the latter analyzes numerical data for solving problems. Additionally, the content introduces survey instruments, emphasizing the importance of considering factors such as research type, cost, target population, research objective, reliability, type of data, and validity when selecting an instrument.