A group of potential causes of riskAn uncertain event or condition that, if it occurs, has a po... More. RiskAn uncertain event or condition that, if it occurs, has a po... More causes may be grouped into categories such as technical, external, organizational, environmental, or project managementThe application of knowledge, skills, tools, and techniques ... More. A category may include subcategories such as technical maturity, weather, or aggressive estimatingThe use of arrange of tools and techniques to produce estima... More.