How to Use the FDIST Function in Excel
Today, we will explore the function FDIST, which is available in both Microsoft Excel and Google Sheets. This function is primarily utilized to calculate the left-tailed F probability distribution for two data sets.
Syntax
The syntax of the FDIST function is as follows:
FDIST(x, degrees_freedom1, degrees_freedom2)x: The value at which the distribution is evaluated.degrees_freedom1: The number of degrees of freedom for the numerator.degrees_freedom2: The number of degrees of freedom for the denominator.
Examples
Let’s review some examples to gain a deeper understanding of how the FDIST function is applied.
Example 1
Calculate the left-tailed F probability distribution for x=2.5, with degrees of freedom as 3 and 5.
| Formula | Result |
|---|---|
=FDIST(2.5, 3, 5) |
0.521833209 |
In this example, the F-distribution value at x=2.5 with 3 degrees of freedom in the numerator and 5 in the denominator is approximately 0.5218.
Example 2
Estimate the probability that the F-ratio is less than 2.0 with numerator and denominator degrees of freedom as 2 and 3, respectively.
| Formula | Result |
|---|---|
=FDIST(2.0, 2, 3) |
0.607118469 |
This calculation shows that the probability of the F-ratio being less than 2.0 with 2 and 3 degrees of freedom is approximately 0.6071.
Through these examples, you can see how the FDIST function facilitates the calculation of F probability distributions in Excel and Google Sheets under varying data conditions.
More information: https://support.microsoft.com/en-us/office/fdist-function-ecf76fba-b3f1-4e7d-a57e-6a5b7460b786