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FoRMUIA DBM3oo43 - EtEcTRIcAL ENGINEERING MATHEMATIcs
DESC*I+T'V,SSTAT|ST,ItS
Number of class Sturges Rule, k 1+ 3.33 log n Rule of Thumb, 2k > n
=
F, - Lwt
Mean '=zf
'
n
t{-"1
Median =r^.lTj"
Median
= L*..1#;,
Mode Mode
u_,
o=L-i=f
Quartile -K uk tnr ;k=1,2,3
I
trru -l
D,=1,,-1#].
Decile ;k=1,2,3......9
P.=I,u-[ry]'
Percentile ;k=1,2,3.......99
l-'
Flr-J -;lr ) u
Mean Deviation c-al I E_ I( l,
n Lr
-z
2 16_;I Z.: -nx
.f =- i=l
n s2=
n
Variance
^, _Lfr' lZnl'
_2 rtk -;lr l
" \.r '-27-LE7l
.LJ
t-J*i*
Standard Deviation
