is it in syllabus ??
are u sure?
actually more appropriately the headin shud hv bin dce...
its there in dce syllabus for sure... dunno abt bits ...
in case u noe wat they r plz lemme noe
google it!!!
its related to stats..... Quite a long topic so its diff. to xplain it 2 u lyk this
hey . .we stuidied this in ISC this year ... its not that tough .. u just need to know the formulas :)