Final Answer:
Vaughan discusses methodological issues with her research in the postscripts of Uncoupling, excluding statistical analysis. So, the correct option is Option 4: Statistical analysis.
Step-by-step explanation:
In her postscripts, Vaughan delves into methodological intricacies, notably avoiding a deep dive into statistical analysis. She does touch upon the nuances of sampling bias, emphasizing its impact on the validity of her findings. Additionally, Vaughan articulates the complexities of data collection techniques, highlighting the challenges faced during the research process. Ethical considerations, a pivotal aspect, are thoroughly addressed, showcasing her ethical approach throughout the study.
Vaughan's discourse largely bypasses explicit discussions on statistical analysis within the methodological framework. She emphasizes the implications of sampling bias, acknowledging its potential to skew results and affect the study's reliability. Her insights into data collection techniques offer a reflective stance, detailing the practical hurdles and strategic decisions made during research. Ethical considerations are a recurring theme, demonstrating Vaughan's conscientious approach to ethical dilemmas encountered in the study.
By abstaining from an elaborate discussion on statistical analysis, Vaughan steers her focus towards other critical methodological elements. Sampling bias, data collection techniques, and ethical considerations take precedence in her postscripts, providing a comprehensive understanding of the research's robustness and ethical foundation. This deliberate exclusion of statistical analysis speaks volumes about her prioritization of other methodological facets in discussing the research process.
So, the correct option is Option 4: Statistical analysis.