CALCULATOR
Root Mean Square of Three Values Calculator
root mean square. Example: A: 2 units, B: 2 units, C: 2 units gives 2 units. Exactly three equally weighted observations in one unit. Elementary arithmetic over the accepted finite domain. No statistical population inference, supplied-data validity claim or specialist recommendation.
Exactly three equally weighted observations in one unit. Elementary arithmetic over the accepted finite domain. No statistical population inference, supplied-data validity claim or specialist recommendation. Derivation: Square, average, then take positive square root.
Accepted inputs: A: -1,000,000 to 1,000,000 units; B: -1,000,000 to 1,000,000 units; C: -1,000,000 to 1,000,000 units.
How the calculation works
RMS = √((a²+b²+c²)/3)
Worked example
With a 2 units, b 2 units, c 2 units, root mean square is 2 units.
Assumptions and limits
Exactly three equally weighted observations in one unit. Elementary arithmetic over the accepted finite domain. No statistical population inference, supplied-data validity claim or specialist recommendation. Derivation: Square, average, then take positive square root.