5. For the purposes of this voluntary undertaking:
“pricing accuracy” means the conformity of prices rung in at the check-out with the advertised price in respect of a good sold in the establishment;
“pricing accuracy rate” means the percentage of goods that are part of a transaction in which the price rung in at the check-out is identical to the advertised price;
“pricing error rate” means the percentage of goods that are part of a transaction in which the price rung in at the check-out is higher than the advertised price.