Page 283 - DSOC404_METHODOLOGY_OF_SOCIAL_RESEARCH_HINDI

bdkbZµ28% fopyu dh eki % ekud fopyu

uksV
(X–A/i)
(X – A) oxZ foLrkj ls
O;fDr;ksa x inksa osQ eè;& Hkkx nsdj fdxd
otu (ikS.M esa) dh la[;k oxZ varjky eku ls dfYir ekè; f × d =
C.I. f osQ eè;&¯cnq dfYir ekè; 115 ls eè; fd 2
dk fopyu ¯cnqvksa dk
fopyu d

70&80 12 75 µ40 µ4 µ48 192

80&90 18 85 µ30 µ3 µ54 162
90&100 35 95 µ20 µ2 µ70 140

100&110 49 105 µ10 µ1 µ49 49
110µ120 50 115 0 0 0 0

120µ130 45 125 10 1 45 45
130µ140 20 135 20 2 40 80
140µ150 8 145 30 3 24 72

N = 237 S fd Sfd 2
= – 112 = 740

∑ fd 2  ∑ fd  2 740 − 112 2

lw=kµ s = i −    = 10  
N N  237  237 

−−
s = 10 3.12 ( ⋅ 47) = 10 3.12 −⋅ 211
2
s = 10 2.909, s = 17 (yxHkx)

bl iz'u esa nh xbZ lkfj.kh esa oxZ varjky osQ eè;&¯cnq (x) rFkk oxZ varjky osQ eè;&¯cnq o dfYir ekè; osQ
chp fopyu izn£'kr djus dh vko';drk ugha gSA geus budks osQoy ikBdksa dks le>kus gsrq mi;ksx fd;k gSA

28-9 fopyu dk egÙo (Importance of Variability)

lkaf[;dh; vuqlaèkku dks ,d ;FkkFkZ Lrj rd ys tkus osQ fy;s fopyu dh x.kuk okLro esa egÙoiw.kZ gSA ekè;]
eè;kad ;k cgqyd ls in&ewY;ksa dh leLr fo'ks"krkvksa dk Kku ugha gksrk gS vkSj blhfy;s ;g laHkkouk lnk cuh
jgrh gS fd gekjk fu"d"kZ Hkzeiw.kZ gksA bl Hkze dks nwj djus esa fopyu dh nsu okLro esa mYys[kuh; gSA okLro
esa ekè; vkSj fopyu nksuksa ,d&nwljs osQ iwjd gksrs gSa vkSj ,d osQ fcuk nwljk oqQN vèkwjk&lk gh jg tkrk gSA
ekè; vkSj fopyu dh la;qDr x.kuk gh lgh fLFkfr dk ifjp; ns ldrh gSA mnkgj.kkFkZ] tc ge fdlh ns'k
osQ fuokfl;ksa osQ izfrO;fDr vkSlr vk; Kkr djrs gSa rks gesa ml ns'k osQ yksxksa dh xjhch ;k vehjh dk iwjk&iwjk
Kku ugha gks ikrk gSA ;fn ns'k esa oqQN yksxksa osQ gkFkksa esa èku ;k laifÙk dk osaQæhdj.k gks x;k gS vkSj os cgqr
vehj gSa rks izfrO;fDr vkSlr vk; tks oqQN x.kuk osQ }kjk gesa irk yxsxk og vfèkdka'k yksxksa dh okLrfod

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