90th percentile definition
90th percentile means the statistical value of exposure data which must be used to determine when HEGs need to be re-classified, calculated either by:
90th percentile means that in nine out of ten responses, the responding vehicle arrives within the required time. This is a national statistical methodology utilized by Emergency Response Agencies to measure and compare emergency response times.
90th percentile means the statistical value of exposure data which must be used to determine when HEG’s need to be re-classified. This value can be calculated by:
More Definitions of 90th percentile
90th percentile means not more than two (2) of the measured values of the quality characteristics exceeding the stated release limit for any twenty (20) consecutive samples for a sampling point at any time during the environmental activity(ies) works.
90th percentile means the value in a distribution under which 90 percent of the values occur and above which 10 percent of the values occur.