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Business planning. Simulation Modeling (Most Important)

Lecture notes, cheat sheets

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33. SIMULATION MODELING

Implemented in Project Expert Monte Carlo simulation, which allows you to build a project model with uncertain parameter values ​​and, knowing the probabilistic distributions of project parameters, obtain the distribution of the project performance indicators under consideration, as well as a risk assessment (coefficient of variation or uncertainty). If the model is correct, the method gives reliable results characterizing both the profitability of the project and its sustainability.

Preliminary selection of factorsinfluencing the results of the project is performed during a sensitivity analysis.

After the factors of the project are identified, which should be recognized as uncertain, not fully controllable, a range of values ​​is established within which they can change randomly.

When calculating, Project Expert will repeatedly randomly select the values ​​of the factor that affects the project performance, and use it to calculate NPV, as well as other performance indicators.

As a result of the Monte Carlo analysis carried out in Project Expert, the values ​​of the expected project performance indicators are calculated.

Stability shows the proportion of settlements in which the project had a positive Cash-Flow with a deviation within the specified limits of uncertain factors. It should be aimed at ensuring that the sustainability of the project is close to 90-100%. In addition to the good sustainability of the project, one should also take into account the average values ​​of performance indicators and their spread (uncertainty), which characterize the risk of the project. An acceptable deviation should be considered a deviation of 20% from the average.

In addition, Project Expert allows you to analyze the histogram of the distribution of indicators, which clearly reflects the amount of uncertainty.

In the case when the proportion of cases of obtaining a negative Cash-Flow in the calculations of the project model is high, and uncertainty indicates a high risk of the project, the financing scheme laid down in the project should be reviewed and the risk assessment for the resulting options should be re-assessed.

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