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I need help finding the value for a formula POISSON
I have the table below:
With the formula POISSON excel =POISSON(10;11.97;TRUE) I get the value of 35.07%
=POISSON( Numero de Peças ; Peças Entregues dentro do prazo 7 dias;TRUE)
The result with the number of parts (10) gives me an availability of: 35.07%
And I have a variable vDisponibility that I inform the availability that I want to achieve.
Ex: If I want 95% availability, I need 18 pieces.
=POISSON(18;624;TRUE) = 96,34%
I need a formula that gives me the amount of parts so that the POISSON return me to the availability I want.
If you need 35% = 10 pieces.
If you need 95% = 18 pieces.
- Parts Delivered within 7 days = 624 / ( 365 / 7 )