Full document / COSOC-W-86-002 - the National Sea Grant Library

goal, an uncertainty analysis was conducted. The analysis included
two components: accuracy and precision. Accuracy was defined as both
sensitivity (i.e. the ability of values to correctly identify all_
stations In a large data set that are known to have adverse
biological effects based on field and lab tests) and efficiency
(i.e., the ability of values to identify only stations that actually
have biological effects). These two deTTnTtions of accuracy are
Illustrated in Figure 2. Precision was defined as the expected
variability of the sediment quality values given the particular
constraints In the design and use of an approach.
Accuracy of the sediment quality values
In general, the magnitude of the sediment quality values (I.e.,
chemical concentrations expected to be associated with adverse
biological effects) generated by the SLC approach were lower than the
corresponding AET values, which were lower than the corresponding
equilibrium partitioning values. The AET (normalized
dry-weight, organic carbon content, and percent
material) and the .equilibrium partitioning approaches
to sediment
fine-grained
ft]
were tested
with respect to their sensitivity and efficiency, that is, the
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