POISSON Function in Excel: Syntax, Examples and Free Practice
POISSON is an Excel Compatibility function. Legacy Poisson distribution — kept for compatibility with older files.
POISSON syntax
Arguments
x: The value to evaluatemean: The average (mean) of the distributioncumulative: TRUE for the cumulative distribution, FALSE for the probability mass
When to use POISSON
POISSON is kept mainly for opening older files built in earlier versions of Excel.
Practice POISSON online, free
Open the live Excel-style spreadsheet and try POISSON yourself. No Excel install or sign-up needed to start.
Practice POISSON now →More Compatibility functions
- BETADIST
- BINOMDIST
- CHIDIST
- CHIINV
- CHITEST
- CONFIDENCE
- COVAR
- CRITBINOM
- EXPONDIST
- FDIST
- FINV
- FTEST
- GAMMADIST
- GAMMAINV
Frequently asked questions
What does the POISSON function do in Excel?
Legacy Poisson distribution — kept for compatibility with older files.
What is the syntax of POISSON in Excel?
The syntax is =POISSON(x, mean, cumulative). x: The value to evaluate; mean: The average (mean) of the distribution; cumulative: TRUE for the cumulative distribution, FALSE for the probability mass.
Where can I practice POISSON online for free?
Open the free live spreadsheet on Cellgrids and try POISSON yourself. No Excel install is needed and you can start without signing up.
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