Document ID: chunk:federal_register_of_legislation:F2021L01789:reg:54
Version: federal_register_of_legislation:F2021L01789
Segment Type: reg
Provision Reference: reg 54
Character Range: 96653–98437

54  Relative precision of the emissions level predicted by a regression baseline emissions model
 (1) This section sets out how to work out the relative precision of the emissions level predicted by the regression baseline emissions model for implementation h for the baseline measurement period.
Note: The relative precision value under this section is calculated for the purposes of the minimum statistical requirements for regression baseline emissions models as set out in section 32.
 (2) The relative precision of the emissions level predicted by the regression baseline emissions model for implementation h for the baseline measurement period is worked out using the formula (equation 27):

where:
RPE,h means the relative precision of the emissions level (expressed as a percentage) predicted by the regression baseline emissions model for implementation h for the baseline measurement period.
t means the critical tabulated student's t value for the appropriate number of degrees of freedom at the 95% confidence level.
Note: The number of degrees of freedom means the number of data points (measurement time intervals) in the regression minus the number of relevant variables in the regression minus 1.
nMI,Mod,h means the number of data points, which is the number of measurement time intervals for which data was used in the statistical regression analysis to develop the regression baseline emissions model in the baseline measurement period.
SEE,h means the standard error of the regression baseline emissions model for implementation h per measurement time interval in the baseline measurement period.
Eh means the emissions level for implementation h for the baseline measurement period, worked out using the regression baseline emissions model for implementation h.