F.DIST.RT function: Description, Usage, Syntax, Examples and Explanation

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What is F.DIST.RT function in Excel?

F.DIST.RT function is one of Statistical functions in Microsoft Excel that returns the (right-tailed) F probability distribution (degree of diversity) for two data sets. You can use this function to determine whether two data sets have different degrees of diversity. For example, you can examine the test scores of men and women entering high school and determine if the variability in the females is different from that found in the males.

Syntax of F.DIST.RT function

F.DIST.RT(x,deg_freedom1,deg_freedom2)

The F.DIST.RT function syntax has the following arguments:

  • X     Required. The value at which to evaluate the function.
  • Deg_freedom1     Required. The numerator degrees of freedom.
  • Deg_freedom2     Required. The denominator degrees of freedom.

F.DIST.RT formula explanation

  • If any argument is nonnumeric, F.DIST.RT returns the #VALUE! error value.
  • If x is negative, F.DIST.RT returns the #NUM! error value.
  • If deg_freedom1 or deg_freedom2 is not an integer, it is truncated.
  • If deg_freedom1 < 1 F.DIST.RT returns the #NUM! error value.
  • If deg_freedom2 < 1 F.DIST.RT returns the #NUM! error value.
  • F.DIST.RT is calculated as F.DIST.RT=P( F>x ), where F is a random variable that has an F distribution with deg_freedom1 and deg_freedom2 degrees of freedom.

Example of F.DIST.RT function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Data Description
15.2068649 Value at which to evaluate the function
6 Numerator degrees of freedom
4 Denominator degrees of freedom
Formula Description Result
=F.DIST.RT(A2,A3,A4) F probability distribution for the terms above. 0.01

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