Rsd is short for relative standard deviation.
Rsd is a deviation measurement that tells us how the different numbers in a particular data set are scattered around the mean.
Formula to calculate rsd.
![How to Calculate RSD.](https://www.learntocalculate.com/wp-content/uploads/2021/01/rsd-1.png)
Example:
Suppose you have a data set whose standard deviation is 2.45 and its mean is 4, calculate the relative standard deviation.
![How to Calculate RSD.](https://www.learntocalculate.com/wp-content/uploads/2021/01/rsd-2-1.png)
Therefore, the rsd is 61.25%.