Problem 3005. Recursive Standard Deviation
When you have a large set of data, it can be resource consuming to calculate standard deviation at every step. So why not calculate a recursive std deviation at step n given:
- mean at step n
- value of added point at step n
- mean and std at step (n-1)
PS1: We'll always consider a vector of length 2 to which we add a third value
PS2: There are two common definitions of stdandard deviation. If you look at the help section of matlab, i used the second definition
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers17
Suggested Problems
-
Find the sum of all the numbers of the input vector
46938 Solvers
-
3995 Solvers
-
17442 Solvers
-
2899 Solvers
-
The Answer to Life, the Universe, and Everything
514 Solvers
More from this Author12
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!