Enter the mean and standard deviation of a data set into the calculator to determine the relative standard deviation.

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## Relative Standard Deviation Formula

The following equation is used to calculate the relative standard deviation of a given data set.

RSD = SD / |M| *100

- Where RSD is the relative standard deviation (%)
- SD is the standard deviation
- |M| is the absolute value of the mean

## Relative Standard Deviation Definition

A relative standard deviation is defined as the ratio of the standard deviation to the absolute value of the mean of a data set.

## Relative Standard Deviation Example

How to calculate relative standard deviation

**First, determine the standard deviation**Calculate the standard deviation of the data set.

**Next determine the mean of the data set**The calculator will use absolute value of this mean for the calculation.

**Finally, calculate the relative standard deviation**Enter the information from steps 1 and 2 into the calculator to determine the relative standard deviation.

## FAQ

**What is relative standard deviation?**

A relative standard deviation is a percentage of the value of a standard deviation to the value of the mean.