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Program evaluation and review technique

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PERT Analysis. Program evaluation and review technique. Optimistic Time, Realistic Time, Pessimistic Time. A presentation from students of RNB Global University.

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Program evaluation and review technique

  1. 1. Program evaluation and review technique Presented By: Gautam Chopra Saurabh Chopra Pradhumn Soni Chaman Tanwar Kanak Binayakiya
  2. 2. Contents • Overview • History • Terminology • Implementation • As project scheduling tool
  3. 3. Overview • Program (Project) Evaluation and Review Technique (PERT) It is basically a method to analyse the tasks involved in completing a given project, especially the time needed to complete each task, and to identify the minimum time needed to complete the total project.
  4. 4. Terminology • OPTIMISTIC TIME (O): Best time if everything goes perfectly • REALISTIC TIME(M): Most likely time • PESSIMISTIC TIME(P): A worst-case situation
  5. 5. Steps of PERT • With the help of above formula we will find “Expected Time” for each activity. • Draw a network. • From the PERT network diagram take the various ratio diagram and find the overall expected duration as sum of duration activities on the route. • The route path which shows maximum duration is critical path • The variance of expected time for each activity • Tp – To 6 • Then we have to find out Standard Deviation which is S.D = √Sum of variance of activities on critical Path { } 2 ______________________________
  6. 6. Jobs Duration Optimistic Most Likely Pessimistic Expected Duration Variance 1-2 3 6 15 7 4 2-3 6 12 30 14 16 3-5 5 11 17 11 4 7-8 4 19 28 18 16 5-8 1 4 7 4 1 6-7 3 9 27 11 16 4-5 3 6 15 7 4 1-6 2 5 14 6 4 2-4 2 5 8 5 1 EXAMPLE:-
  7. 7. 1 2 3 5 8 7 6 4
  8. 8. • 1-2-3-5-8 = 7+14+11+4 =36 • 1-2-4-5-8 = 7+5+7+4 =23 • 1-6-7-8 = 6+11+18 = 35 Activity 1-2-3-5-8 is having longer duration so it is lying on the critical path.
  9. 9. Standard Deviation 1-2-3-5-8 S.D. =√2+16+4+1 = √25 S.D. = 5
  10. 10. THANK YOU

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