00:11:00	Matthew Bellis:	:)
00:25:17	Sadhana Verma:	We make Control region for few backgrounds only as I seen in analysis. Can we make for all of them .
00:38:36	Matthew Bellis:	@Sadhana, sorry if someone already answered this question, but in general, it is always useful to look at your control region, however you have defined it, for all your backgrounds.
00:39:01	Matthew Bellis:	But you don't want to necessarily define a different control region for each background separately.
00:41:49	Sadhana Verma:	So the idea is only for major backgrounds basically.
00:42:39	Matthew Bellis:	Yes. *If* you know what the major backgrounds are in advanced, then you can use those to determine the control regions....
00:42:41	Matthew Bellis:	however....
00:43:19	Matthew Bellis:	my point is simply that you should always examine (look at the plots) as to how those control regions look in other backgrounds, even if they are smaller
00:43:29	Matthew Bellis:	Just a good experimental practice. :)
00:44:22	Sadhana Verma:	Thanks @Matthew for Clarifying it
00:46:08	Matthew Bellis:	You're welcome!