Unit variability factors

Calculation settings

Table 153 Calculation settings for module Unit variability factors.
Name Type Description
Selected tier

SettingsTemplateType

Specifies all module settings should be set according to a pre-defined tier or using custom settings.
Unit variability model
UnitVariabilityModelType Describes variation between single units when concentration data are from composite samples.
Estimates nature
EstimatesNature Simulated unit concentrations can be higher or lower than composite value (realistic) or only equal or higher (conservative).
Unit variability parameter
UnitVariabilityType Use Coefficient of variation or Variability factor, specified in VariabilityFactor table.
Mean of LogNormal simulated values (biasing)
MeanValueCorrectionType Unbiased: correct unit simulations for difference between median and mean.
Default variability factor for unit weight <= 25g

Numeric

Default variability factor 1 (unit weight <= 25 g, small crops). Still requires specification of unit weight (FoodProperties table) and, in case of beta model, also the Number of units in a composite sample (UnitVariability table).
Correlation between substances on the same units
UnitVariabilityCorrelationType Specifies the type of correlation between substances on the same units; no correlation or full correlation.
Default variability factor for unit weight > 25g

Numeric

Default variability factor 5 (unit weight > 25 g, medium/large crops). Still requires specification of unit weight (FoodProperties table) and, in case of beta model, also the Number of units in a composite sample (UnitVariability table).