The price of dishwashers has increased due to the implementation of the higher technology. Since the quality of dishwashers has improved, The CP which contains the price of dishwashers could overestimate the inflation if it is not adjusted to take account of the higher quality could overestimate the inflation because it does not reflect the increased production of dishwashers. estimate accurately because itis already capture the increased quality of dishwashers could underestimate the inflation and we can simple take out any price changes due to the technology from CPL