Interarea price levels: an experimental methodology

Abstract

Bettina H. Aten Although the Consumer Price Index (CPI) survey is not designed as an interarea survey, it is possible to use its price observations and sampling weights to obtain estimates of area price levels for various categories of consumer expenditure. Combining these estimates across the expenditure categories produces an experimental index of the price level differences for the areas. This was first done some 15 years ago by Mary Kokoski, Patrick Cardiff, Brent Moulton, and Kim Zieschang using 1988–89 prices, and more recently by Bettina Aten using 2003 prices.1 This article shows a shortcut approach for calculating the 2003 interarea prices and repeats the exercise for 2004. It also describes the methodology, presents the detailed results for 2003, and provides a comparison with the 2004 results.

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