DOF-Adjusted Coefficient of Determination

Location:

Report Variable (Peak Calibration)

Type:

Floating point number

Dimension:

%

Value Range:

 

Default:

 

Related Parameters:

Coefficient of Determination

Description:

The DOF-Adjusted Coefficient of Determination calibration variable returns the coefficient of determination corrected by the degree of freedom.

Function:

The calculation is as follows:

 

With:

N

Number of standard samples involved in the calibration

 

m

Number of degrees of freedom (= coefficients to be determined according to the Calibration Type: LIN: m = 1; LOFF: m = 2; QUAD: m = 2;
QUOFF: m = 3 and EXP: m = 2),

 

i

Index for standard samples

 

Wi

Weight factor of the standard sample no. i

 

F(x)

Model function of the calibration

 

Xi

X-value of the standard sample no. i

 

Yi

Y-value of the standard sample no. i and

 

Average of all Y-values.