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'kSf{kd ekiu rFkk ewY;kadu
uksV prqFkZ lksikuμ
pfjrk fo'ys"k.k rkfydk
pfjrk dk va'k dh oxks± dk ;ksx oxks± dk eè;eku
Ïksr Lora=krk
1. ijh{kk£Fk;ksa dh (10 – 1) = 9 7.88 0.875 = V e
2. inksa dh (12 – 1) = 11 9.50 0.863 = V
i
3. 'ks"k vFkok =kqfV 99 12.43 0.126 = V r
pfjrk dk ;ksx 199 29.80
V − V .875 − .126 .749
r = e r = = = 0.875
tt V e .875 .875
= .875 vFkok 0-88 fo'oluh;rk xq.kd
bl fofèk esa nks Hkqth rkfydk (ijh{kkFkhZ in) rS;kj dh tkrh gS bldk iz;ksx owQMj osQ lw=kksa osQ fy, Hkh mi;ksxh
gS rFkk pfjrk fo'ys"k.k esa iz;qDr fd;k tkrk gSA bl fofèk dh izeq[k fo'ks"krk gS fd inksa osQ vadksa dh pfjrk dh
x.kuk djosQ rc fo'oluh;rk xq.kd Kkr fd;k tkrk gSA
pfjrk fo'ys"k.k fof/ dh voèkkj.kk,¡ (Assumptions of Analysis Variance Method)μbl fofèk dh
izeq[k fo'ks"krk,¡ vèkksfyf[kr gSaμ
1- ijh{k.k osQ inksa osQ dfBukbZ Lrj esa fHkÂrk gksrh gS vkSj ijh{k.k osQ in fotkrh; gksrs gSaA
2- izkIrkadksa dh pfjrk esa ijh{kk£Fk;ksa dh pfjrk inksa dh pfjrk rFkk =kqfV Hkh lfEefyr gksrh gSA
σ = σ + σ + σ 2 r
2
2
2
i
x
e
pfjrk = ijh{kkFkhZ + in + =kqfV
2
tcfd σ = izkIrkadksa dh pfjrk
x
2
σ = ijh{kk£Fk;ksa dh pfjrk
e
2
σ = inksa dh pfjrk
i
2
σ = 'ks"k vFkok =kqfV
r
mi;ksfxrk (Advantage)μbl pfjrk fo'ys"k.k fofèk dh vèkksfyf[kr mi;ksfxrk gSμ
1- mijksDr nh xbZ pkjksa fofèk;ksa osQ lqèkkj osQ :i esa budh lHkh lhekvksa dks è;ku esa j[kdj fodflr fd;k x;k gSA
2- bl fofèk ls izkIr fo'oluh;rk xq.kd okLrfod fo'oluh;rk xq.kd osQ vfèkd lehi gksrh gSA tcfd
mijksDr fofèk;ksa }kjk izkIr xq.kd okLrfod xq.kd ls de gksrk gSA
3- bl fofèk dk iz;ksx 'kfDr ijh{k.k rFkk xR;kRed ijh{k.k osQ fy, vfèkd mi;qDr gSA bldk iz;ksx uhfr
ijh{k.k osQ fy, Hkh fd;k tk ldrk gSA
4- bl fofèk }kjk izkIr fo'oluh;rk xq.kd lkekU; vkSj fof'k"V xq.kksa osQ LFkk;h vkSj vLFkk;h nksuksa i{kksa ij
fuHkZj gksrk gSA
lhek,¡ (Limitations)μbl fofèk dh vèkksfyf[kr lhek,¡ gSaμ
1- bl fofèk esa lkaf[;dh dh pfjrk fo'ys"k.k izfofèk dk iz;ksx fd;k tkrk gS vr% bl fofèk esa Kku vkSj
dkS'ky dh vko';drk gksrh gSA
2- nks Hkqth; rkfydk dk rS;kj djuk Hkh dfBu dk;Z gS cM+s U;kn'kZ rFkk ijh{k.k dk vkdkj cM+k gksus ij
vlEHko&lk izrhr gksrk gSA
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