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©2008 Aldo Mattos Consulting. All Rights Reserved. AbordagemProbabilística do Planejamento Engº Aldo Dórea Mattos, MSc, PMP
Quadro de sequenciação ©2008 Aldo Mattos Consulting. All Rights Reserved.
Quadro de sequenciação ©2008 Aldo Mattos Consulting. All Rights Reserved.
Quadro de sequenciação ©2008 Aldo Mattos Consulting. All Rights Reserved.
E D A B C F H G Diagrama de flechas ©2008 Aldo Mattos Consulting. All Rights Reserved.
E D 6 3 A B C F H 6 3 8 7 4 G 11 Durações ©2008 Aldo Mattos Consulting. All Rights Reserved.
E D 6 3 A B C F H 8 7 6 3 4 G Caminho crítico 28 11 ©2008 Aldo Mattos Consulting. All Rights Reserved.
Duração ©2008 Aldo Mattos Consulting. All Rights Reserved. Que certeza se tem de que as durações previstas são corretas?
©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
©2008 Aldo Mattos Consulting. All Rights Reserved. Duraçãoesperada 	O + 4M + P E =					 	6
©2008 Aldo Mattos Consulting. All Rights Reserved. Desvio-padrão 	P – O σ =					 	6 σ2 = variância
©2008 Aldo Mattos Consulting. All Rights Reserved. Desvio-padrão
©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação
©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação
©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação
©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação 32 – 10 σ = ------------- = 3,7 dias 	  6 10 + (4 x 15) + 32 E = ------------------------- = 17 dias 		     6
©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação 3,7     3,7 17 20,7 24,4 28,1 13,3 9,6 5,9
E D 6 3 A B C F H 8 7 6 3 4 G Voltando a nosso exemplo... 28 11 ©2008 Aldo Mattos Consulting. All Rights Reserved.
Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
E D 6,17 3 A B C F H 7,5 7 6 2,83 4,67 G Caminho crítico probabilístico 28 10,67 ©2008 Aldo Mattos Consulting. All Rights Reserved.
©2008 Aldo Mattos Consulting. All Rights Reserved. Duração total Se a duração das atividades tem incerteza, quão precisa é a duração total calculada?
©2008 Aldo Mattos Consulting. All Rights Reserved. Desvio-padrão e variância – exemplo σ2total = Σ σ2crítica σ2 = σ2A + σ2B + σ2C + σ2F + σ2H σ2 = 1,78 + 0,25 + 0,69 + 1,78 + 1 = 5,5 σ = 2,4 dias
©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo 2,4     2,4 28 30,4 32,8 35,2 25,6 23,2 20,8
©2008 Aldo Mattos Consulting. All Rights Reserved. Probabilidade de umprazo dado 	x – T K =					 σ K = fator de probabilidade x = prazo dado T = prazo calculado σ = desvio-padrão
©2008 Aldo Mattos Consulting. All Rights Reserved. Probabilidade de umprazo dado
©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo T = 28 dias σ = 2,4 dias Probabilidade de terminar em até 20 dias: K = (20–28)/2,4 = –1,70 -> 5% Que prazo tem probabilidade de80%? K = 0,85 -> x = K . σ + T =  30 dias
©2008 Aldo Mattos Consulting. All Rights Reserved. Para saber mais…
©2008 Aldo Mattos Consulting. All Rights Reserved. Obrigado! www.aldomattos.com aldo@aldomattos.com “Nãohá nada maisprático do queuma boa teoria”

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Abordagem probabilística

  • 1. ©2008 Aldo Mattos Consulting. All Rights Reserved. AbordagemProbabilística do Planejamento Engº Aldo Dórea Mattos, MSc, PMP
  • 2. Quadro de sequenciação ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 3. Quadro de sequenciação ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 4. Quadro de sequenciação ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 5. E D A B C F H G Diagrama de flechas ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 6. E D 6 3 A B C F H 6 3 8 7 4 G 11 Durações ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 7. E D 6 3 A B C F H 8 7 6 3 4 G Caminho crítico 28 11 ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 8. Duração ©2008 Aldo Mattos Consulting. All Rights Reserved. Que certeza se tem de que as durações previstas são corretas?
  • 9. ©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
  • 10. ©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
  • 11. ©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
  • 12. ©2008 Aldo Mattos Consulting. All Rights Reserved. Estimativa de 3 pontos
  • 13. ©2008 Aldo Mattos Consulting. All Rights Reserved. Duraçãoesperada O + 4M + P E = 6
  • 14. ©2008 Aldo Mattos Consulting. All Rights Reserved. Desvio-padrão P – O σ = 6 σ2 = variância
  • 15. ©2008 Aldo Mattos Consulting. All Rights Reserved. Desvio-padrão
  • 16. ©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação
  • 17. ©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação
  • 18. ©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação
  • 19. ©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação 32 – 10 σ = ------------- = 3,7 dias 6 10 + (4 x 15) + 32 E = ------------------------- = 17 dias 6
  • 20. ©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo: escavação 3,7 3,7 17 20,7 24,4 28,1 13,3 9,6 5,9
  • 21. E D 6 3 A B C F H 8 7 6 3 4 G Voltando a nosso exemplo... 28 11 ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 22. Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 23. Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 24. Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 25. Durações probabilísticas – exemplo ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 26. E D 6,17 3 A B C F H 7,5 7 6 2,83 4,67 G Caminho crítico probabilístico 28 10,67 ©2008 Aldo Mattos Consulting. All Rights Reserved.
  • 27. ©2008 Aldo Mattos Consulting. All Rights Reserved. Duração total Se a duração das atividades tem incerteza, quão precisa é a duração total calculada?
  • 28. ©2008 Aldo Mattos Consulting. All Rights Reserved. Desvio-padrão e variância – exemplo σ2total = Σ σ2crítica σ2 = σ2A + σ2B + σ2C + σ2F + σ2H σ2 = 1,78 + 0,25 + 0,69 + 1,78 + 1 = 5,5 σ = 2,4 dias
  • 29. ©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo 2,4 2,4 28 30,4 32,8 35,2 25,6 23,2 20,8
  • 30. ©2008 Aldo Mattos Consulting. All Rights Reserved. Probabilidade de umprazo dado x – T K = σ K = fator de probabilidade x = prazo dado T = prazo calculado σ = desvio-padrão
  • 31. ©2008 Aldo Mattos Consulting. All Rights Reserved. Probabilidade de umprazo dado
  • 32. ©2008 Aldo Mattos Consulting. All Rights Reserved. Exemplo T = 28 dias σ = 2,4 dias Probabilidade de terminar em até 20 dias: K = (20–28)/2,4 = –1,70 -> 5% Que prazo tem probabilidade de80%? K = 0,85 -> x = K . σ + T = 30 dias
  • 33. ©2008 Aldo Mattos Consulting. All Rights Reserved. Para saber mais…
  • 34. ©2008 Aldo Mattos Consulting. All Rights Reserved. Obrigado! www.aldomattos.com aldo@aldomattos.com “Nãohá nada maisprático do queuma boa teoria”