MATLAB: What is the significance of variance and correlation of a signal

variance

significance of variance

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

Best Answer

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!!!

Related Solutions

MATLAB: How to find the standard deviation of the linear regression

If you want the standard deviation of the residuals (differences between the regression line and the data at each value of the independent variable), it is:

Root Mean Squared Error: 0.0203

or the square root of the mean of the squared residual values.

MATLAB: Statistical Significance using ttest2

The paired t-test says nothing about correlation. (The 'unequal' flag is about the variances.)

Consider:

t = linspace(0, 10*pi);
v1 = sin(t);
v2 = 2*rand(size(t))-1;
[h,p] = ttest2(v1, v2)
h =
     0
p =
     0.6819

It does indicate if the means are different (rejecting the null hypothesis) at a specific significance.

EDIT — Added example.

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Related Solutions

MATLAB: How to find the standard deviation of the linear regression

MATLAB: Statistical Significance using ttest2

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