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CONFIDENCE Function in Excel: Syntax, Examples and Free Practice

By Rinkesh Shah, founder of Cellgrids.

CONFIDENCE is an Excel Compatibility function. Legacy confidence interval formula — kept for compatibility with older files.

CONFIDENCE syntax

=CONFIDENCE(alpha, standard_dev, size)

Arguments

When to use CONFIDENCE

CONFIDENCE is kept mainly for opening older files built in earlier versions of Excel.

Practice CONFIDENCE online, free

Open the live Excel-style spreadsheet and try CONFIDENCE yourself. No Excel install or sign-up needed to start.

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More Compatibility functions

Frequently asked questions

What does the CONFIDENCE function do in Excel?

Legacy confidence interval formula — kept for compatibility with older files.

What is the syntax of CONFIDENCE in Excel?

The syntax is =CONFIDENCE(alpha, standard_dev, size). alpha: A shape parameter of the distribution; standard_dev: The standard deviation of the distribution; size: The sample size.

Where can I practice CONFIDENCE online for free?

Open the free live spreadsheet on Cellgrids and try CONFIDENCE yourself. No Excel install is needed and you can start without signing up.

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