What is the significance of variance and correlation of a signal?

significance of variance

if there is a statement that a signal has a variance of 0.1 what would you understand?

[Walter Roberson]

This is not a MATLAB question.

Answer 1

[Sachin Ganjare]

Refer link below:

http://www.mathworks.in/academia/student_center/tutorials/signal-processing-tutorial.html

For significance of variance refer below link:

http://en.wikipedia.org/wiki/Variance

Hope it helps!!!

Answer 2

[Walter Roberson]

I would not understand anything in particular. Is that a variance of 0.1 megaparsec-squared, or a variance of 0.1 attoseconds-squared? Variance is meaningless without a unit of measure.

If you are interested in what variance means, then research it such as via wikipedia.