retail price index (x of retail price in) refers to the price index of retail goods paid in the form of cash or credit card. Each month, the U.S. Department of Commerce conducts a nationwide sample survey of retail goods, including furniture, electrical appliances, supermarket products, medicine, etc., but excluding the consumption of various service industries. Car sales constitute the largest single component of retail sales, accounting for about 25% of the total. statistical method

the Statistics Bureau of the US Department of Commerce conducts a national sample survey of retail industry every month. The survey objects are various types and scales of retail industry (all registered companies of the Department of Commerce). Because of the wide range of retail industry, random sampling is adopted to obtain more representative data. Durable goods retailers include car retailers, supermarkets, drug and alcohol dealers. It is difficult to collect and calculate the data of service industry, so it is excluded. However, service industry is also an important part of consumption expenditure, which can be seen from individual consumption expenditure (including commodity retail and service). data interpretation

many foreign exchange market analysts pay great attention to the change of retail price index.

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