Denne korrelation ses i grafen ved den lineære regressionslinje for GRP-pris i forhold til den gennemsnitlige GRP, der viser den "gennemsnitlige" relation mellem GRP-pris og GRP for alle kanaler i den omhandlede periode.
The correlation is represented on the charts by the linear regression line of GRP price against average GRP, which reflects the "average" relationship between GRP price and GRP for all the channels over the period examined.