3. MethodologyThere are three important research methodological paradigms: the quantitative method, the qualitative method and the mixed method.3.1 The quantitative method (QUAN)QUAN can, to put it simply, be defined as the techniques which involve the collection of data, the analysis, interpretation and communication of digital information. in sequential order. The QUAN researcher is dedicated to the principles of positivism – the view that “explains phenomena by collecting numerical data that is analyzed using mathematical (especially statistical) methods.” Aliaga and Gunderson (2000). One of the advantages of quantitative research is a shorter time frame. In other words: data can be collected in simpler ways, for example by sending or receiving by e-mail and/or post, distributing it or collecting it by particular people, so that the data can be analyzed fairly quickly. A survey using this method can also be quickly generalized to the entire population thanks to statistically random samples. Quantitative can provide a reliable data set that provides confidence if the information is consistent and reliable. The survey can be conducted anonymously when related to a sensitive subject. It protects privacy. Certainly, the goal of generalizing the results in the target group can be achieved. However, quantitative research might be unable to investigate the problem while respondents answer closed-ended survey questionnaires. Even if they are willing to share their experience or perspective, their responses may not be useful to researchers. In the worst case, a misunderstanding or inaccuracy creates potential bias in the study. He is unlikely to discover new information, but the important attitude, if any, can be overlooked. In case the research study involves a large quantity of samples, it can be costly.3.2 Quality...... middle of paper ......ds count per building or per square foot? Therefore, the proportion of samples in different types of real estate is based on the perception from the team discussion. Selection criteria include: type of popular real estate properties, low-income group, often dealing with people (renters, residents, occupants, users, etc.). Self-reported data Another limitation is that the data collected for this research study can hardly be independently verified. . In other words: the people interviewed or the respondents to the questionnaires may contain a certain potential bias, that is to say a low level of perception on the part of the respondents (the target population consists of security agents who generally have a low level of education, their understanding of the terms used in the questionnaires may not be accurate Therefore, we would compare this QUAN data with the QUAL data. If there is a significant difference, something must be wrong...