How to rewrite: the difference between quantitative and qualitative risk control practices. Quantitative risk control is a method that uses numerical values to assess the level of risk. This could be in terms of price, time, weight, etc. It is usually applied at the project level. However, it can be time-consuming and may require specialized tools for analysis. On the other hand, qualitative risk control uses a predetermined scale to assess the level of risk. This scale is usually from one to zero, with one representing 100% risk and zero representing no risk. This method is applied at the risk level. It is simpler and faster to perform than quantitative risk control, and it doesn't require any extra tools apart from the predetermined scale. In summary, the main difference between the two methods is that quantitative risk control uses numerical values and may require specialized tools, while qualitative risk control uses a predetermined scale and is simpler and faster to perform