Project management methodologies play a crucial role in determining the success or failure of a project. Selecting an inappropriate methodology can lead to inefficiencies, budget overruns, delays, and even total project failure. This article investigates the correlation between project failure and the incorrect selection of project management methodologies through a structured survey conducted among project managers with direct experience from past projects. The research aims to quantify the impact of methodology selection on various project outcomes, including stakeholder involvement, risk identification, and the effectiveness of mitigation strategies. The survey is carefully designed to capture comprehensive data on past project characteristics, including project size, complexity, industry, team composition, and the frequency of methodology changes. It also examines the reasons behind methodology selection, the rationale for methodology changes, and the effect of these decisions on final project outcomes. By focusing on both successful and failed projects, the study identifies common risk factors and assesses how specific methodologies either contributed to or mitigated those risks. A key aspect of the analysis involves using statistical calculations to evaluate project failure and success rates, resource availability, stakeholder engagement, and the extent to which an incorrect methodology influences project deliverables. By employing formulas such as project success rate, stakeholder involvement, resource availability, initial methodology that was used, wrong methodology, correlation between project failure and wrong methodology, most remediated and not remediated risks, correlation between risk monitoring frequency and project failure, correlation between team composition and project failure and correlation between project complexity and project failure This approach allows for an objective evaluation of the degree to which incorrect methodologies correlate with project failures and highlights patterns of risks that are most frequently remediated or left unresolved. The findings from this research will offer actionable insights for project managers and organizations, enabling them to make more informed decisions when selecting methodologies. By understanding the relationship between methodology choice and project outcomes, organizations can adopt best practices to minimize project risks, improve project success rates, and ensure greater alignment between the chosen methodology and the unique needs of each project. Additionally, the study's statistical framework can be applied in future research to further refine the analysis of project management methodology effectiveness.