The political, demographic and policy headwinds causing China’s economy to slow and possibly unravel with serious repercussions for the world’s economies and markets.

@Old Joe . My guess is the CMS just pulls numbers out of some data banks which are not accurate.

BLS data collectors visit (in person, on the web, or using apps) or call thousands of retail stores, service establishments, rental units, and doctors' offices, all over the United States to obtain information on the prices of the thousands of items used to track and measure price changes in the CPI. We record the prices of about 80,000 items each month, representing a scientifically selected sample of the prices paid by consumers for goods and services purchased.
During each call or visit, the data collector collects price data on a specific good or service that was precisely defined during an earlier visit. If the selected item is no longer available, or if there have been changes in the quality or quantity (for example, a 64-ounce container has been replaced by a 59-ounce container) of the good or service since the last time prices were collected, a new item is selected or the quality change in the current item is recorded.
Prices used to compute the CPI are collected during the entire month. CPI data is published monthly, with the index value representing an estimate of the price level for the month as a whole, rather than a specific date. Since certain prices, particularly gasoline, might move sharply within a month, it is useful to understand the timing of price collection. A month is divided into three pricing periods, each period corresponding to roughly the first ten days, second ten days, or third ten days of the month.
When an item is initiated into the CPI sample, its pricing period is established, and it will be repriced during that same period until it exits the sample after four years. Data collectors have discretion within pricing periods, so they can collect quotes at any time during the period. So, it's not necessarily true that data collection is spread perfectly evenly through the month; however, roughly equal amounts of data are collected in each pricing period. Rent prices are an exception to this, as prices in the rent sample are not divided by pricing periods, and specific rent quotes can be collected at any time during the month.
Pricing information is then sent to our national office, where specialists who have detailed knowledge about the particular goods or services review the data. These specialists check the data for accuracy and consistency, and make any necessary corrections or adjustments. Adjustments can range from an adjustment for a change in the size or quantity of a packaged item, to more complex adjustments based upon statistical analysis of the value of an item's features or quality. Thus, commodity specialists strive to prevent changes in the quality of items from affecting the CPI's measurement of price change.