Semi-Quantitative Analysis
Semi-Quantitative Analysis :
"In semi-quantitative analysis, qualitative scales are given values. The objective is to produce a more expanded ranking scale than is usually achieved in qualitative analysis, not to suggest realistic values for risk such as is attempted in quantitative analysis. However, since the value allocated to each description may not bear an accurate relationship to the actual magnitude of consequences or likelihood, the numbers should only be combined using a formula that recognizes the limitations of the kinds of scales used. The limitations of the approach are that the numbers chosen may not properly reflect relativities and this can lead to inconsistent or inappropriate outcomes and semi-quantitative analysis may not differentiate properly between risks, particularly when either consequences or likelihood are extreme". (UNDAP, Techniques Used in Disaster Risk Assessment, 2008)
