Month of November has historically seen huge NIFTY volatility as can be seen from the table [refer below]
NIFTY on an average has witnessed an absolute average move of about 12.9%
Thus for Nov-2010, we may expect the NIFTY to witness similar trend as in the past.

Date: Abs Volatility %(High/Low)
30/11/1999 14.4
30/11/2000 8.8
29/11/2001 12.7
29/11/2002 11.7
28/11/2003 8.0
30/11/2004 10.5
30/11/2005 15.2
30/11/2006 6.4
30/11/2007 11.4
28/11/2008 29.5
30/11/2009 13.2

Average: 12.9

Maximum: 29.5

Minimum: 6.4

source: a friend