The root mean square formula gives the square root of the total sum of squares of each data in an observation. Root mean square, abbreviated as RMS is the square root of the arithmetic mean of the squares of a group of values. It is also called quadratic mean. Root mean square value for a function can also be defined for a continuously varying function in terms of an integral of the squares of the instantaneous values during a cycle. Here, the root mean square formula calculates the square root of the arithmetic mean of the square of the function that defines the continuous waveform.
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