PTdecode/CImg-1.3.0/html/reference/formula.repository@629637abfe1f
PTdecode/CImg-1.3.0/html/reference/formula.repository
Fri, 25 Sep 2009 10:50:44 +0100
- author
- Philip Pemberton <philpem@philpem.me.uk>
- date
- Fri, 25 Sep 2009 10:50:44 +0100
- changeset 21
- 629637abfe1f
- parent 5
-
1204ebf9340d
- permissions
- -rwxr-xr-x
added dots-per-inch to status readback
1 \form#0:$ v = 1/N \sum\limits_{k=1}^{N} (x_k - \bar x)^2 = 1/N \left( \sum\limits_{k=1}^N x_k^2 - \left( \sum\limits_{k=1}^N x_k \right)^2 / N \right) $
2 \form#1:$ \bar x = 1/N \sum\limits_{k=1}^N x_k $
3 \form#2:$ v = \frac{1}{N-1} \sum\limits_{k=1}^{N} (x_k - \bar x)^2 $