|
One item is filed under this topic.
 |
|
|
|
|
|
|
|
|
Incremental standard deviation |
2003-04-12 |
|
From Carlos:
I need to calculate the standard deviation for a group of data, but I don't know in advance what is the mean. Is there a way to adjust the STDV for each datum without keeping all of the previous values? This is needed basicaly for performance, so I won't need to read twice the same data (spend processing time) nor save the previous values (spend memory).
Answered by Andrei Volodin and Penny Nom. |
|
|
|
