# 统计代写|经济统计代写Economic Statistics代考|ECON227

## 统计代写|经济统计代写Economic Statistics代考|A Few Words about Future Plans and Conclusions

For over a century, the CPI has been constructed primarily using data collected by BLS staff. Big Data can provide information on real-time weighting, the missing fundamental piece from official price statistics for years. New alternative data sources have the potential to address many of the problems faced in recent years, including lower response rates and higher collection costs. After several years of work on various alternative data sources, BLS now has a goal to replace a significant portion of CPI direct collection with alternative data sources by 2024. BLS will prioritize alternative data for item categories and outlets based on a number of factors including the relative importance of the item, the number of quotes replaced, the cost of collection, the cost of alternative data, the accuracy of the current item index, respondent relationship with BLS, ease of implementation, response rates, and the concentration of the sample for a given item. For example, 15 establishments each account for more than 1,000 price quotations apiece. BLS will prioritize gaining cooperation for corporate data collection from large establishments such as these, as well as respondents in specific highly concentrated markets, and will also explore alternative data for item categories that may benefit in terms of accuracy and/or efficiency. In addition to agency-specific efforts, the BLS is working with our partner statistical agencies to collaborate on acquiring new data sources and exploring new uses for existing administrative and survey datasets. BLS is also sponsoring a new National Academy of Sciences Committee on National Statistics (CNSTAT) panel, comprised of academic and other experts, to investigate three key methodological issues, including how BLS should modify current CPI methodology to deal with the challenges presented by blending traditionally collected data with alternative data. ${ }^{10}$

As reflected in table $2 \mathrm{~A} .1$ at the end of this paper, there are numerous items to pursue, balancing index accuracy and operating costs. The table is organized in parallel to the CPI-U news release tables, with item categories aggregated to the highest level at which alternative data can be pursued. The legend at the end of the table provides information on the contents of each column. This is the current plan and will change as progress is made and experience gained. As of now, table $2 \mathrm{~A} .1$ indicates that the CPI has either current or potential planned “experience” in item categories to some degree, representing about 30 percent of the relative importance in the CPI-U.

## 统计代写|经济统计代写Economic Statistics代考|Retail Data Collection and Modernization Efforts

Retail trade is currently measured by the Census Bureau through monthly and annual surveys, as well as through a quinquennial Economic Census, and covers retail companies as defined by the North American Industry Classification System (NAICS). Retail businesses (NAICS Sector 44-45) may be chain retailers with many store locations, retailers with only one store location, or retailers operating solely online as e-commerce businesses. The retail businesses represented may or may not have paid employees. Table $3.1$ provides a summary of the Census Bureau’s retail trade programs. In years ending in “2” and “7,” the Economic Census collects detailed sales and product-level information as well as employment, payroll, and business characteristics for each physical store location that a retailer operates. Data collected by the Economic Census is used to update the sampling frame for the annual and monthly retail trade surveys. Each year, the Annual Retail Trade Survey (ARTS) collects annual sales, e-commerce sales, inventories, and expenses data as well as some retailer characteristics at the retailer level nationally by NAICS. The MRTS – a subsample of the ARTS – is a voluntary monthly survey done at the retailer level and collects sales and inventories. The timeliest measurement of the retail economy is the Advance Monthly Retail Trade Survey (MARTS), a subsample of the MRTS. This survey’s estimates are published approximately two weeks after month’s end and measure only sales.

## 统计代写|经济统计代写Economic Statistics代考|Retail Data Collection and Modernization Efforts

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