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Updated: Mar 27, 2026
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Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients
Published on: August 22, 2018
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Average egg price: Mean reversion and persistence in a time series approach
Aitor Sarasola-Cullen1, Luis Alberiko Gil-Alana1,2
1Department of Economics, University of Navarra, Pamplona, Spain.
Plos One
|March 25, 2026
Summary
Average egg prices in the U.S. show long memory, meaning past prices influence current ones. Egg prices and the Producer Price Index (PPI) are cointegrated, indicating a stable long-run relationship.
Area of Science:
- Economics
- Econometrics
- Agricultural Economics
Background:
- Consumer Price Index (CPI) trends reflect economic health.
- Rising food prices, particularly for staple eggs, impact consumer spending.
- Understanding price behavior is crucial for policymakers.
Purpose of the Study:
- Analyze the long-term behavior of U.S. average egg prices.
- Determine if egg prices exhibit long memory or mean reversion.
- Investigate the relationship between egg prices and the Producer Price Index (PPI).
Main Methods:
- Fractional integration methodology applied to time series data.
- Statistical analysis of long-term price behavior.
- Cointegration methods to assess the relationship between egg prices and PPI.
Main Results:
- Evidence of long memory in average egg prices.
- Long memory also observed in the Producer Price Index (PPI).
- Mean reversion identified in the PPI.
- The average egg price series and PPI are cointegrated.
Conclusions:
- A stable long-run equilibrium relationship exists between U.S. average egg prices and PPI.
- Egg prices exhibit long memory, influenced by historical data.
- The cointegration suggests sustained co-movement between egg prices and PPI over time.
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