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sumittaneja009
- Senior | Next Rank: 100 Posts
- Posts: 38
- Joined: Sat Nov 08, 2008 4:36 am
So on the graph(which actually not needed here )
it says it was between 1 and 2 SD below mean!!
that is left side of the bell curve !
so the value has to lie betwwen 2sd=9 and 1 sd=15
15-9 is the range !! so
only number which fits the spot
---- 12 Vishu
