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Activity Number: 346 - Measuring and Improving the Quality of Government Statistics
Type: Contributed
Date/Time: Tuesday, August 1, 2017 : 10:30 AM to 12:20 PM
Sponsor: Government Statistics Section
Abstract #323702 View Presentation
Title: Measurement of Chain Drift in the Chained Consumer Price Index
Author(s): Joshua Klick*
Companies: U.S. Bureau of Labor Statistics
Keywords: BLS ; Chained Consumer Price Index ; C-CPI ; chain drift ; weight representativity
Abstract:

Chained price indexes may drift from fixed base indexes as price change occurs over time. Fixed base indexes may not exhibit drift, but the weights are susceptible to being less representative than the weights of chained indexes. This paper introduces basic price index concepts including chain drift and weight representivity and uses Bureau of Labor Statistics (BLS) Consumer Price Index (CPI) data to demonstrate that high levels of weight representivity and low levels of index chain drift can co-exist for the superlative Tornqvist formula.


Authors who are presenting talks have a * after their name.

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