The measure used to report price changes at the wholesale level is the:

The measure used to report price changes at the wholesale level is the "Producer Price Index (PPI)".

The producer price index (PPI) is a group of indexes that estimates the normal change in offering costs gotten by household makers of merchandise and enterprises after some time. The PPI estimates value changes from the point of view of the seller and varies from the buyer value record (CPI), which estimates value changes from the buyer's viewpoint. The PPI thinks about three regions of generation: industry-based, product based and item based last interest transitional interest. It was known as the discount value file, or WPI, until 1978.  

answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;