| 2 Todraducton of Statistics
 
 
— a Shai ik
| Sataatics — -
_ — lesen iso the se Science _ _7a collection
agence ac ayaa intesprelertiss
noaton ae a
 
 
”
a __ Statistics a _methed of -clecisiows -
mal 9 “The of _ Un Ces nn ye
— phase 1 2 adanlis 0 tha
 
 
 
| basis” of numerical “ole seks.”
Eo = Prof Ya Inn > chow.
 
tatistics ave raumericailly 0¢o7e.
dotisties oe agnee geile ot facts.
Johadics awe __aPfor lac) Jo 01 —rvvnthes!_esclend
ould idyy of causes
dish '? io nomimatecl © @astixnes}eo)
: eae, ped te use chap) _
ach - other Lactose! ssFr
 
—
 
 
Statistes:
: - ~ = hy
Sdotis tics may be define ds gone»
of facts affec) toa warhead) * i
alfiplicit-y of Causes, ume dically Spr Sse
“enwmirelea) ov estimealed Ctecord ine do a
Feclsonab les Juncknyd of Meeatiretey 00 Nlocle J |
A S¥sk matic mannay, foy
ol — pres cleleray,}
PUrPEse and Placed jm relation ae of
 
 
Sach op. - |
260 nam».
te Stade -
a pes SMa ogemant
ina phys" : en
C2 Science -
ss other snes“[Sielidics —oees ned ole] gsi jnoleed. nanan
| Statistics enfy deal oui t__quandidive roe
-| Stdaties resulls ame scaly oma
| L dnly olvenge ok nol 2 ie
h j — -
_-| Statistics is — on oasis
| Gt ise -enly a toa! _ —cohich is enly fe
_ priper. _use.).
 
 
 
| sdatishis can _be—2miss a :
a ae
By di tous! A _slalslics me mean kak of
 
 
 
 
 
contialen atistical statement onl
‘Sladjstical methads Tis otlen bel .
" Stotis th com —_paove—_alny thing”. these gre
 
lyos of es , lies © lied’ olan hms.aird
datisdics. ~ aricked jn the order_of. naman
rom are__the poi! s_/neas0n for_such_motions
being jell by peo ple fx shadistes *
Are ane eo| 2 Ana
S| Aba |
—— +| Gasoue
=——P Dizgnos S_ _gaupha— oe = stead whicl haves ‘| Concept
a birds sage View of _# “sel of ich_ give i | ea
 
 
a + Del
=| Diapason og . ere ~ atfuctive —fasinatins a
_ lng sive than - of mumerical_clada. v8. + I
univag
 
 
—— | Dheg one mare — —Ca: Los such ame_cacknsive! 7
usec! do __paesent “aiisd tical Higuie & _focls in ples. Give
most of He —enibilians, trade "6 nds firs, os
able Aanclions._ shishicalrepard ets on
_| int
=| They ae gisdew rca hl mpressian on te | 23
thind. 93
 
 
a.
mind Gonos! _betone . al
 
 
 
 
“sg = [ken paeperly —camstaucted_cliganns. pha — pon
—
more 1 ivi then fi faulted ue
ee
trond changes. =~—
se
 
2 Anal e's
dguchioe of fie ny ells tsi butions =
|osept of. centeal. tenoler mice Rds
YS peso n,
padicion value. moments skewness
ati
psd
A gle ith single —vasiable _is “called
univaycl : -
 
 
 
 
iL Given _clala is no. of ondcare sold _on
[95 wovking cla by leading Acuse
G95 -
construct “a Feque distribution of — -
- information + ue ° me pier -
93, 30, 20, 26,30, 30, 20,93, 20. 4, 26,90,
95, 40, 28, 26. 98:,80.48, 24. 08, 30,20, 30,2
-anallsd val tae 22
highest = 7
 
 
7 Frequecy lint ay
 
  
 
 
 
 
No. of _ frequency.| oe -
chieg isto
200 4 ——
Q3 4
26 po BP
23 jf 4A
BO L__€ =
40 \ ou —wamplet| fresent fhe following olada ot marks of De
|60_ applications eho esexe given 8 Cerda,
| test for He puapose ot selection toa po -
| 41, 6%, 36, 49 65,79, 14, 92.52, 93, 14, $3,
1€3, 33 , 39, 4%, 35, 9%, 63,44 45, 20, % |
[55,59 , 60, 3, $062, 99,49, 85,.32.93,55, |
| 60, 34, 9,51, %, 60, 5%, 45, 1, 64, 44,
60, 40, 6, 63,50, 64, 32,Sanesi! a -condratl
 
eee eel. ch's reson
“of _a_pomertal foul at analysis isto
 
 
 
 
|e
Os lee —elverage value’ thal represen!
| lige mass ot yaal aver: ~ Bus is
value ahich is corstdler a fh. mds?
on dad ye jeal value fay _ ot given set
caja, Sueh a _velye is nerthey phe smallas!
as the _laggest value bub 3) js of numbes whose
| value is ae in the middle on the
| gaa! for edltan —an___oWveserge _j Freqrs andy
| aefemeal eS (seal aa —endaey
or_cen/ral valu
 
| eames of centenl  Jendan devs ds.
| MH denelanoy af same
| cohich —“Glada ends Ao clusd
 
=| 0b
jeclives of A mye
 
 
 
 
 
fi) To facil, comparision.
 
TS
<1 Ty
| 7
 
) To get ome ain, luce taf chseribes pe
aracteri co Hee slater
archers 2 ot Goose) weange © =
haul! _b fa tmelenstard
Aauld be simyle Ja compul st
should be basee) on all” the obser vation
should be eigielly man
 
| shoul) he cued le ot farther — 2 plate ment,989553 = Ewe
 
 
 
| CW] aio rap uca
Cow a fe7 Py
OW) -unpayy
(X72 (47 uray QF Mey Ley
S
CWE] ues 21H rw 5
©
3
r
[ypoesust 240 ypsryo Frsepce —poepuay
omens po fropsodal aug 20 Beng
 
‘Wet
 
 
 
O80 O60 ES og © Ors Er -coora9t f+
7 - “43 069-93 O9E~Sr—FORE- E+}
_ - SO At Ca Peg ph—
 
Pearongnp wonp boi}aera HSepraic Vere O hoti pats
   
 
value repeat; vg mos a
 
 
 
 
 
 
 
 
£5. &:
5
2
_ ted _
45-55 6 sf :
5
a = aa
 
 
 
 
[ge U2 ye 10. =
ote = : —af of re ae alg —_
elle ltely the umd sein ages an ble |
 
 
Iti alized:
- ae ae ole!
 
veal4a _:
2 9g66
a _ _— aes
  
log Gl + lag ay + log wp na 10g Xm_/
 
 
 
n
z leg T# log 3+ 1g 4” \_a Measuses d Opin oe
 
|" Dis peasion ‘wnesiguges fhe “eclend, Jo ehicl,
2 “idems_ Bag | hom same —centyal value. pace seeailox a)
| Dispession _ _is also _known as __scatter, Sp
ax vaioton . fey ex 9.4.4, me —
——|_Hewe 2 > 5, bo a ae vapmil Gaal
— | Foam mean
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
) a Range t= Range can be defined a5 the lite _
| and the value of. He lay Olgas) yhsex vari Mn. ae
| jmelucleal in dhe oe mate . ae
| mange > hiphes! value = smalles! value Che —|—
| o-Misenl of soye SoS la<
Guards devation
=
wegge amount by which — Fhe”
difference from the midingDeriation \ and its oo: Aa ..
 
 
 
 
 
 
 
 
 
 
Sh. | caloulate — euaetile
from the olleesing — alata :
- ela, 3. No ofan of :
——__ a ee
le 24. —
 
 
 
 
 
 
- [14,500 - 15,000 @,
  
et
 
 
IS,s00 — 16,000,
 
 
 
 
 
 
ee
[6,000 ~ 16,500 oF 245 =
1,500 ~1%,000 1S 259 '
—} eve = (9,500 1S 24S ;
19,500 > (8,000 4 294 —
 
 
 
16,000 ~ 18.500= 15,000 + 909,35
TE ; aa) Q, = 15, 205.33 Ro oe
 
  
 
 
 
 
 
21S G60 ATLo GE esis] —
 
 
 
 
2 o- icient of Qs s Qs- @
- Q, 74,
 
= 1S TS - 14, 56.2)
ISdES + 4 TREY)
 
 
 
 
 
 
2 (388.99
y 30,506 3.0 seL.2)
: [ross] —
 
eeloo -
L- 1400
= 1600 |
        
 
“1206 |
 
 
 
 
 
 
 
 
 
 
 
 
1M ela = abseavation _
2
2 1400 2400
2
a G2 MEE + senQ, = %
3 t+ 30% of a
: - > 1oso
= Oo -
¥00 + 10507 108°, 900
120
 
 
 
 
a 3,4) scl .
 
 
 
 
 
 
] Oy 2995 ( akbe
 
 
 
 
 
 
 
 
 
 
 
 
toatl tend af Qy +03 - Os
“4 +0, +0,
Oo = 450-300 —-
SO +300 ft| the
} Ae
aveoqye—
given
 
| Mean Deviation t= The mean —olevindion is olePiyvadd ns
ar |e |e
deviation -fram the mean value of
olafa sed adow dhe. following bt,
|
|
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
£3-| ColeubJe mean cleviahion a
: Hlandayd
No.of cold |_noef_| fini} 1-#) | fier}
experience 9 ___ person —}— —-— i sd
—_| 12 months — _f | ——_4 : -
— oe
= OT
— __ i __—_—
—}|— 2 _
| 3
|. 410
5 | __46
it é 2
4 6
% 13
4 g
edi 2 C490 |sdys -94951
52 ediod efas [zs 5.
ede 42
ADg = €f loc -%1
Al
— = 144,08 -
C40— —— =
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
24.9
115.1
a te Vay = ef lez] gooup ed Jaufer
G44 n ] g
10.4
14 4.6
— =| ea ees ae a ziven |
c
_ L.A ([elass is mot aiven)
dl ee a + efol
_| rm“Sg. | Calculate Standard dleviedian dow Phe alloy — |
  
 
 
  
 
 
  
 
   
 
 
 
 
 
‘Dege| Cleat
2
ee = wi] te
\. diset Cx -3C 1 Cae 7 ¢ Dox lee)
- ieerozsssss 8 Caitaao))
e400 = [FEAF | 3987-2081 | 37.66%, 4p
LAs0 ~ PATE) eH. FO} MONT | Le cg
U3 ~ FIT | stss. 2059) 2084.39: cok
|ss0 Ott | 488. 2069 S104 ae qo-s
gios0 | 99.83 | 521.2051) 2060, | go -
U3 $2.43 | ©304,2089) 386814 | qo -|
10. S00. 122-83 | 1508. 209} | 301th; |
‘ .9097|_ 259
| +4600 | 142-93) 2asto.20x7| t5e%c1/
Etloi |
2 (tie |e
 
 
 
 
 
 
 
 
 
 
_ 2 | 1t26¢3.5 z _
| __y _ #30
|e teecule de__Avexage aA
 
 
 
 
 
 
 
 
 
 
 
 
 
 
seam Auge} fii | toc =z) |
lo 450 24,3 | 243
t $25 14.3 {214.5
2 16 25° __ 4,3
e 22.50 S2
LZ 1020 Int3. | Coleulale —sdanclemal —dlevialion -
 
 
 
 
 
 
 
 
 
 
 
 
 
fe = [eFlt  fofedi \* a
J OT
 
> /455 _f1g5\*
L950 930)
—| —. Lazo By —
60.) i levretiar f Zt A : /
Teeny. 2 re i
sual tdi, 40s
 
 
300
“3 A150°
- G00Compute
 
No.of sub.
 
smecin= [495 54 \f ‘
110 oe -
_—_ydte b4t
Ff 1.948t = 619 St xo
    
=_y¥) Partition Value > Moments [ax]:
Nomends ave wed fo understond the winious
charceleristics of a frequency dislabulion. eidh
ly of — mamend, central tendancy. clispossion,
& hurbsis of a “dsbildlon can be shidied
 
 
 
 
ase specialised averages. The averqye off
;
viatiom of the —_abservations foam thet mean
lis call the fing} + central - moment.
“il ilasl the average of. squares of deviation of
Te ale fyom — their mean — is called
| sewnd - cenleal manent.
b
— Similarly. the ~queryye of Pace of deviahion of
the obseavation fram —e mean is called
gaged =< _centeal - mame: -
“W ae _cire__ghver 1) observation ef a nendom
x then is central — moment 9
  
 
 
 
variable
define 05.| fox a dis. wiz ple foaquency distribution She
ony
 
2 womens
 
x central ee = Alaa)
 
4 Nn.
i central moment >}, = ehil& +&)
- N
 
[a cael camomad a ig EST
 
 
  
— Al
aa evdval es moment = He 2 es F
pment
Le aIe ampuse the tins} dou cond]
}
 
moments. tram
y | the do llocoing dota. =
[ye 2 2.8.10, 16, 00, eee
L _ .
xi (x, -5)| Cay -e)* (0g, -@) | Cx - %)| aka:
  
| Bind fiast aire “cent ea ~ fom {blow
(ati =A) | 106 -A| #0 A Ys ~All
 
   
     
      
 
-£ -93 | 44
 
 
     
 
    
 
 
   
 
 
 
 
 
 
 
   
 
 
 
2 0 a0)
-2 ~40
oO | oOo
a 20
2(ental
  
Moments by -
 
 
 
 
 
Using na a -
0
ete = ———
Ho —=to - (4g) —
se 0g
| : x7 - 0.159 = ~
ion 3 a
_—_—— Te ' ry!)
|, = Wy > ae A)
Hs = -6.5¢ 7 X38) (6
3 — _
+ 9(H,) — —, —
=
1.39) + 9 (-0.31): _ 4
[Ay 2 eCti ca) = 164 = 199.9
Nv
 
|
 
——
 
Ne Ha
a
LH Ho > Hy Ay). = log - €0.4) 2
es "Hy ~ 3Hy Ay? + 9H, )
\
 
 
6.3 _- ato.4)Go.4) + Ae en
6.3 + 19.4% # - 0.198
 
ihe ie
 
 
 
| = 14,152 -
na Hl = te (Hy) + 6X: = Cal,
= 499. - 4(6.a)l-0-4) + athe ad
 
 
2 + 10.55 + 1.194 - 0.0768 _
913, Fath eeeH. = HAs -CAy) = 10.4 - (-0-4) : ee s
_
a
~ 6.3 - 3(0-4)C0-4) + 9(~0-4) i
= 6.5 459.4% @ OIG
 
  
 
 
  
 
 
 
 
- 19,159
___}—_—_————+—__ nv oF ener
ee Hy ~ Ha > 4H) + 62 Uti) = 30
| = 419.8 - 4(eg)l-0-4) + 6li0.6) C04) ~
(2399.9 + 10.99 + 1.794 - 0.0768
2 93 S82ee he _ahich
Type bsevad inn ane tibet a gent
[ieee le 
3 2 Po 23 7
[ OY 20
 
Ce}
 
 
 
 
 
 
 
Plady feurtic —cugve
Yay
Y, 40
 
 
=)| Use of moments for meeisunin:
_| Kurdosis—
 
skewness .
“y—lisdoi budion 2
 
 
Tg iis tad tna pak “aheal vamp
 
| AL ~ Frequency olistoibudion, cota
i ng Pa nem aea hog ~centoal el
Zex0
tof. oy alistoibution 1's _O,
| The ee ee fas He he) dee /
a _the variance | the —aiis}ibuti Lown,
|The fies) fous codvel aoa) me a olisIyibutios, =
laze used Jo fincl skewness cme! Kusdosi's
Sheoness = 6, = Aa —
Ay
 
Kurtosi =«fo =Hs
 
 
 
 
 
 
 
 
 
 
 
 
ye
Using thés measuaes the eo =H iccnt of
V4 ~ of bice _
pj aan
t, = Pp =3 eu
Tina _symmedoica) Distaihuliorr, SJewnass is Zeno
| Py 20. "=,
calculation Ay 4%, i positive €
| Ale, being variance Ap is also _posidive
 
Hence, B hile. i. nin Pha sign of shawn
“te — oe 22 pegs ta kerr ot
the gna —ea. Fined tins ) fous ee moments les the follow
observation and also finds the vahias 0
Ps, 2, %s,%0, Hs, Ho, Hy, Ha? é
eT A2, 13,17, 18, 20 i
fcc: | Gy ea] ese P [cei ey] tg a
2 -4 (6 - 04 ase j
(3 ato q -2F sl j
ca 1 i 1 ( j
| _1s _ 2 4 s (6 |
| 90 a 16 64 gs6 |
HO Of Ente gt {
xe em 2 50 [acl a2
Py = cts - 63.6) RD
—_—_——_ o
Ay Gay tye Ol66
/ fy = Ja 2 (22 = 22, nT
a As (9.2) 34. 64,
—
Yo: Pp 24.4639 = 9 2 15857 tt= ale “A _ Ts = 14 4
| et §
 
 
 
 
 
 
 
 
 
- ———— - 4
ag = -
1.4 = (-0.1) LO
21.4 - 9.01
ae = ADD le :
 
oe ade lide aC), 7
 
= Ay - 445 Cth) > 6 CY aC),
2 6.6 -4(-0.4)(-0.1) + 6ln4) (0.1) =aboil
6 - 0.l6 + 0.0%4 - 2.0003
 
Ce S234]
 
 
15 HS
t Py
psitive shew —
 
34 is phsi
ve) + _
seen uae
Hy: “2(0.018) . 9.000324 é al
Ay a a Casey'Gace | Cori adc -an hic: - a
go | -ts | -co | 400 | -15,s00 209s
100 -10 -100 1000 | -10,000!-4 99 ype
goo | ~ 5 | - 100 | 500 |-2500 | 259
430 | ° o. 7 2 e
A s 30 400 | 2000 10.00
3¢0.| 10 rg0 | 1200 | r20ee | J.2000
4o| 1s_| 30] aso | 6450 |sor95
yy] 0 | -30 |4450 | -sare shesCa al
09 svo a
0 ,000- | ~~ — > ee
‘one os = 30) 9c?
$0,000 SSE SO = 3644.50) (0:5) 4 20.37
goooo| |, “S250 40.05 #- 0.9.04 .
[la SOBe ~
eS Tal ite maT
ja [a [a 3 fs Va
_ 2 3 6 S =6 | 12
3 {or | - | “#] 4
ata] 2o | so |  O| ag o
L 60 l pee ay.
6 4 | 94 Dy _3 16
_\¢4 ' u_| 3 a | st
So| 23 3 13 33
[
Re eticd . ony 2 426
nm SO
eters) Ger) aa 20.96
WV. so
Wo = efi ltr-A) os 53 2 1.66
W 0
Ho = ati l& ~A) = 6F = 1.34
WV sO
a Hy. eft (Si -A) 2 455g,
as 1 —oo
iw
en : =
eS A
fe = l¢e . (0.96) ee
 
 
EES POO nn I@ oa) ee
3C 3.66) (0.96) + 2Co.26) oo
= 1.2949 + 0.0 152 .
 
fe a AC a2 oee) 2 eC ree le.26) = 3/0.26)"
= S.1- 4.89 36+ 0.643776 - 0.0134 *
Me = 3,36 5198 $649
As 2 £.365U4
2 _ 2 -
By, = OG) = (0.08032). 906451 = 0.00.16
O° (4.5924 4.0877 —
 
By - Ae = 9.36597, . 836597 = 3.9973.
(Hey (4.5924) © 2.5354 =
ee oc
Io bg - 3 2 3.2999 -