Howtosignalprocessing
What is the mean of a signal?
The mean, indicated by µ (a lower case Greek mu), is the statistician's jargon. for the average value of a signal. It is found just as you would expect: add all. of the samples together, and divide by N.
What is variance of a signal?
The variance of a discrete-time signal is the square of the standard deviation of the signal. Variance gives a measure of deviation of the signal from its mean value.
