TRIMMEAN Function - Returns the inner mean of dataset in Excel

Buzz

This article introduces you to the TRIMMEAN function - one of the frequently used statistical functions in Excel.

Description: It returns the inner mean of the dataset by excluding a specified percentage of values from the upper and lower bounds.

Syntax: TRIMMEAN(array, percent)

In which:

- array: Array or data range to be trimmed and averaged, which is a required parameter.

- percent:

The percentage of data points to be excluded from the calculation, which is a required parameter.

Note:

- If Percent < 0 or Percent > 1 -> the function returns the #NUM! error value.

- The TRIMMEAN function rounds the number of excluded data points to the nearest multiple of 2.

For example:

Calculate the trimmed mean of the dataset described in the table below:

- In the cell where you want to calculate, enter the formula : =TRIMMEAN(D6:J6,D7)

- Press Enter -> the trimmed mean of the dataset is:

- If the percentage of data to be excluded is greater than 1 or less than 0 -> the function returns the error value #NUM!

Here are instructions and some specific examples of using the TRIMMEAN function in Excel.

Wishing you all success!

Frequently Asked Questions

What is the purpose of the TRIMMEAN function in Excel?

The TRIMMEAN function in Excel is designed to return the inner mean of a dataset by excluding a specified percentage of values from both the upper and lower bounds. This helps provide a more accurate average by removing outliers that could skew the results.

How do you properly use the TRIMMEAN function's syntax?

To use the TRIMMEAN function, you must follow the syntax: TRIMMEAN(array, percent). Here, 'array' is the data range to be averaged, and 'percent' is the portion of data points to exclude, which is crucial for obtaining the trimmed mean.

What error does TRIMMEAN return for invalid percentage values?

Yes, if the percentage value specified in the TRIMMEAN function is less than 0 or greater than 1, it returns the #NUM! error. This indicates that the input value is outside the valid range for percentage exclusions.

Can you provide an example of using the TRIMMEAN function in Excel?

Certainly! For example, if you want to calculate the trimmed mean of data in cells D6 to J6 and wish to exclude a percentage defined in D7, you would enter the formula =TRIMMEAN(D6:J6, D7) in the desired cell and press Enter to see the result.

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