Page 239 - DSOC404_METHODOLOGY_OF_SOCIAL_RESEARCH_HINDI

bdkbZµ27% osaQnzh; izo`fÙk dh eki% ekè;] ekfè;dk] cgqyd

27-5 v[kf.Mr (lrr) Js.kh dk ekè; fudkyuk uksV
(Calculation of Mean in Continuous Series)

;fn oxkZUrjksa (class intervals) dh vko`fÙk ;k ckjEckjrk (frequency) nh gqbZ gS rks Hkh ekè; fudkyus
dh nks fof/;k¡ gaSµ,d rks izR;{k fof/ vkSj nwljh laf{kIr ;k y?kq fof/A bu nksuksa fof/;ksa osQ lEcU/
esa ;gk¡ vyx&vyx foospuk dh tk ldrh gSA

(v) izR;{k fof/ (Direct Method)µizR;{k fof/ }kjk v[kf.Mr Jsf.k;ksa dk ekè; fcYoqQy mlh
rjg fudkyk tkrk gSA

D;k vki tkurs gSa izR;{k fof/ }kjk [kf.Mr Jsf.k;ksa dk ekè; fudkyk tkrk gSA osQoy blesa ,d pj.k vfèkd
bl :i esa gks tkrk gS fd blesa oxkZUrjksa (class intervals) dk eè;&ewY; ;k eè;eku
fudky fy;k tkrk gS vkSj bl izdkj v[kf.Mr Js.kh [kf.Mr Js.kh esa cny tkrh gSA

bl izdkj izR;{k fof/ dks ge fuEu :i esa izLrqr dj ldrs gSaµ
(d) izR;sd oxkZUrj dk eè;eku ekywe dhft,A ;g eè;eku fdlh oxkZUrj dh mPprj lhek (upper

limit) rFkk fuEurj lhek (lower limit) osQ ;ksx dk vk/k gksrk gSA bl izdkj ;fn dksbZ oxkZUrj
+
1015
lhek (class interval) 10µ15 gS rks bldk eè;eku ¾ 12-5 gksxkA
2
([k) izR;sd oxkZUrj dh vko`fÙk (f) ls mlh oxkZUrj osQ eè;eku (x) dks xq.kk dhft, vkSj mudk xq.kuiQy
(fx) ekywe dhft,A

(x) rRi'pkr~ mijksDr xq.kuiQyksa dk ;ksx (åfx) rFkk vko`fÙk;ksa dk ;ksx (åf) vFkkZr~ n Kkr dhft,A

(?k) xq.kuiQyksa osQ ;ksx (åfx) dk vko`fÙk;ksa osQ ;ksx (n) ls Hkkx nsdj yfC/ ekywe dhft,A
(Ä) ;gh yfC/ ekè; gksxkA

vr% laf{kIr fof/ osQ lw=k dks ge bl izdkj fy[k ldrs gSaµ
∑ fd
ekè; M =
∑ n
;fn laosQrk{kj n osQ LFkku ij åf dk iz;skx fd;k tk;s rks ekè; dk lw=k bl izdkj gksxkµ
∑ fx
M =
∑ n
mijksDr nks lw=kksa esa ls fdlh Hkh lw=k dh lgk;rk ls ekè; dh x.kuk dh tk ldrh gSA mÙkj ;k ifj.kke
,d gh gksxkA

mnkgj.k 5- fuEu lkj.kh esa Hkkjr bySDVªksfuDl fyú osQ 65 deZpkfj;ksa dh lkIrkfgd etnwjh dk vko`fÙk

caVu fn;k gqvk gSA izR;{k fof/ }kjk lekUrj ekè; dh x.kuk dhft,A

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