Statistics & Probability
Root Mean Square
Quadratic mean of data.
Formula
Formula
RMS = √Σ xi2n
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| xᵢ | data values | computed result | — | result |
| n | count | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givendata = 1, 2, 3, 4
Result2.738612788
Example 2
Givendata = 3, 4
Result3.535533906