Why is the empirical distribution not behaving as expected?

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Enrique Elizaga asked Jul 24, '20 Joerg Vogel answered Jul 25, '20

Why is the empirical distribution not behaving as expected?

Hi. My model assigns 1 of 30 possible SKU ID based on an empirical distribution. After running more than 1,000 samples i graphed a histogram in excel and the distribution does not behave as I expected. Am I doing something wrong?

Software Version:

FlexSim 20.1.1

flexsim 20.1.1 empirical distribution

stats.fsm (851.9 KiB)

1000-samples.xlsx (23.3 KiB)

· 3

5 |100000

Attachments: Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Jeff Nordgren commented · Jul 24, 2020 at 06:09 PM

@enrique.elizaga,

I'm not sure if I understand what you are trying to do. You say that you have a possible 30 SKU IDs but in your SKU_DYNAMICS table that you use, you only have 5 possibilities. So what happens to the other 25 SKUs? I'm not sure what you are trying to accomplish.

Thanks.

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Enrique Elizaga Jeff Nordgren commented · Jul 25, 2020 at 05:37 AM

Hi @jeff.nordgren and thanks for your reply. I ignored we had a cempirical distribution available. This gets me exactly where I wanted to! Thank you.

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Enrique Elizaga Enrique Elizaga commented · Jul 25, 2020 at 05:50 AM

@joerg.vogel the cempirical distribution (instead of empirical) behaves exactly how I expected! Thank you.

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Answer 1 · 2020-07-25T05:50:43Z

Joerg Vogel answered Jul 25, '20

You should use cempirical instead of empirical

empirical returns at a probability of 4 uniform distributed values in the range of [4..8]

cempirical returns for the same table uniform distributed values in the range [0..4]

5 |100000

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