Summary
Summary Statistics
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Handwritten cheat sheet of Statistics from JEE 2020 topper
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atharvashinde
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StotistcsThexe ase 5 5 measue of centa tendency
DA.M. 2) 4-M, 2) H-M. 4) Median
5) Mode
) AzithmeicMean
Gum otseies, =
no. ot tesmg
Anithmetc mean XA t d.
whexe As asSumed mncan d dovation
2) Geometic Mean
(aM) is by
La,aydsy Maloglam)= logt lag )
3) Hasmonic Mean
n
1
A-M qives to lasgex
yoluee' whexeas HM gis e
so smalles alueg
, 4) Median
lhdivisal seies ': Data.. amaznged in
ascending ldezendiag
be oF
ordeag.
bserYtion
let n
Fn isodd Median=[nu]" tem
n s even
2Discxet sesesi- ae fiust find
And the
CAumulafie hreguencieç of tho
he vaables
LastangadMedian_=
s aalendialdazcending
tesm
order
goouped/continaus d'stibutons
a) Aocendling Ordex Median = t di
l= loarey imit JeWdhof rodian class
N= Sumof all faagueny
C: The cumlahre Hegueny ot he
class preceding to to medSnclas
h Descending orde Medan zu-(2
upper imit
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