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title: "Variability is calculated and Randomness and Uncertainty are simulated - VC-RS-US model"
canonical: "https://modelassist.epixanalytics.com/space/EA/26575532/Variability%20is%20calculated%20and%20Randomness%20and%20Uncertainty%20are%20simulated%20-%20VC-RS-US%20model"
format: markdown
---
The [V](https://epixanalytics.atlassian.net/wiki/spaces/EA/pages/26575531)<sub>[C](https://epixanalytics.atlassian.net/wiki/spaces/EA/pages/26575531)</sub>[/R](https://epixanalytics.atlassian.net/wiki/spaces/EA/pages/26575531)<sub>[C](https://epixanalytics.atlassian.net/wiki/spaces/EA/pages/26575531)</sub>[/U](https://epixanalytics.atlassian.net/wiki/spaces/EA/pages/26575531)<sub>[S](https://epixanalytics.atlassian.net/wiki/spaces/EA/pages/26575531)</sub> model was used to illustrate how quickly the calculation method of assessing V and R can become very complex. We saw how the complexity of a V<sub>C</sub>/R<sub>C</sub> risk model  increases exponentially with additional elements. The equivalent V<sub>C</sub>/R<sub>S</sub> model, however, is still extremely simple because the complexity of a V/R<sub>S</sub> model increases only linearly with additional probability elements. The model is provided here: [VC RS US - 1](#VC_RS_US_-_1)

> Macro (anchor)



The links to the VC RS US - 1 software specific models are provided here:

<details>
<summary>Crystal Ball</summary>

> Macro (inline-media-image)

 [VC_RS_US_-_1](/wiki/download/attachments/26579343/VC_RS_US_-_1-CB.xlsx?version=1&modificationDate=1506113509000&cacheVersion=1&api=v2)

  


Here is a screenshot of the model:


![image632.gif](media://c62571e8-055e-4725-a58a-3180a9511668)
</details>

  


<details>
<summary>@Risk</summary>

> Macro (inline-media-image)

 [VC_RS_US_-_1](/wiki/download/attachments/26581760/VC_RS_US_-_1-AtRISK.xlsx?version=1&modificationDate=1506097531000&cacheVersion=1&api=v2)

  


Here is a screenshot of the model:


![image398.gif](media://9b52114f-bb5b-46fc-8e4e-e2c052ac122a)
</details>

  


A V<sub>C</sub>/R<sub>S</sub> model does, however, increase exponentially with additional levels of variability. This model is also provided here: [VC RS US - 2](#VC_RS_US_-_2)

> Macro (anchor)



The links to the VC RS US - 2 software specific models are provided here:

<details>
<summary>Crystal Ball</summary>

> Macro (inline-media-image)

 [VC_RS_US_-_2](/wiki/download/attachments/26579343/VC_RS_US_-_2-CB.xlsx?version=1&modificationDate=1506113509000&cacheVersion=1&api=v2)

  


Here is a screenshot of the model:


![image633.gif](media://427d7ba8-077c-43de-a73c-e1bf6fb44f56)
</details>

  


<details>
<summary>@Risk</summary>

> Macro (inline-media-image)

 [VC_RS_US_-_2](/wiki/download/attachments/26581760/VC_RS_US_-_2-AtRISK.xlsx?version=1&modificationDate=1506097531000&cacheVersion=1&api=v2)

  


Here is a screenshot of the model:  


![image397.gif](media://0c227f29-5872-492c-b8f5-390a59eb1e3d)
</details>

Add another layer to the variability (say source of infection) and we need three dimensions, so the simulation software/Excel would no longer be the preferred modeling environment.

  


  


  


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