Division 1.2.6 F1

United Kingdom

‘Cross-correlation coefficient’ ( r ) means:

$r = \frac{\sum_{n - 1}^{i = 1} (x_{i} - \bar{x}) \times (y_{i} - \bar{y})}{\sqrt{\sum_{n - 1}^{i = 1} {(x_{i} - \bar{x})}^{2}} \times \sqrt{\sum_{n - 1}^{i = 1} {(y_{i} - \bar{y})}^{2}}}$

where:

x _i

is the measured reference value

y _i

is the measured value of the parameter to be verified

\bar{x}

is the mean reference value

\bar{y}

is the mean value of the parameter to be verified

is the number of values

Annotations

Textual amendments

F1: Inserted by Commission Regulation (EU) 2016/427 of 10 March 2016 amending Regulation (EC) No 692/2008 as regards emissions from light passenger and commercial vehicles (Euro 6) (Text with EEA relevance).