Enter the sum of your trimmed data set and the total numbers in that trimmed set into the calculator. The trimmed mean calculator will display the trimmed mean.

## Trimmed Mean Formula

The following formula is used to calculate a trimmed mean.

μ = ∑ X_{i} / n

- Where
**μ**is the trimmed mean **X**_{i}is the sum trimmed data set- n is the total amount of numbers in the trimmed data set.

how to calculate a trimmed mean

**First, gather your trimmed data**Gather a set amount of trimmed data from your overall data that you believe will accurately represent the data as a whole.

**Sum the trim data**Add up all of the values in the trimmed data set.

**Count the total numbers**Determine the total amount of numbers in the trimmed set.

**Calculate the trimmed mean**Using the sum of the trimmed data and the total numbers, calculate the trimmed mean used the formula above.

## FAQ

**What is a trimmed data set?**

A trimmed data set is a small set of data pulled from a larger data set. In general, for useful information it’s important to pull a trimmed set that’s likely to represent similar characteristics of the larger data set.

**What is a trimmed mean?**

A trimmed mean is exactly as it sounds, it’s the average of the values of the trimmed set you chose.

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