Root mean square calculations

Hello,

I want to calculate the sqaure root of the mean sqaured differences of succesisve numbers. Can anyone explain of how to calculate this in matlab if possible with an example for a set of numbers.

thanks.

Answer 1

[Image Analyst]

Stefan, what happened when you tried this:

m = sort(rand(1, 7));  % create sample data
mDiff = diff(m)
meanSquareOfDiffs = mean(mDiff .^ 2)
ms = sqrt(meanSquareOfDiffs)

It seems pretty easy if you just take it a step at a dime. Heck, you could even have used a for loop if you really got stuck and needed a simple brute force method. What did you try that didn't work?

[Image Analyst]

By the way, this (what you described) is not the RMS like you or someone tagged this post with.