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Documento de Trabalho 05/2019 - Using the Moran's I to Detect Bid Rigging in Brazilian Procurement Auctions

Author

Listed:
  • Ricardo Carvalho de Andrade Lima

    (Ministério Público Federal (MPF))

  • Guilherme Mendes Resende

    (Conselho Administrativo de Defesa Econômica (Cade), Departamento de Estudos Econômicos)

Abstract

This paper evaluates if there is systematic correlation between the bids that are placed by competitors in the sealed phase of procurement auctions, which is a situation that may suggest coordinated and fraudulent behaviour. By applying Moran’s I statistic to the residuals of controlled bid regressions and using a novel and public database, we show that the bids that were placed by the investigated companies have positive and statistically significant autocorrelation.

Suggested Citation

  • Ricardo Carvalho de Andrade Lima & Guilherme Mendes Resende, 2019. "Documento de Trabalho 05/2019 - Using the Moran's I to Detect Bid Rigging in Brazilian Procurement Auctions," Documentos de Trabalho 2019050, Conselho Administrativo de Defesa Econômica (Cade), Departamento de Estudos Econômicos.
    • Handle: RePEc:atg:wpaper:2019050
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