Page 226 - DECO504_STATISTICAL_METHODS_IN_ECONOMICS_HINDI

vFkZ'kkL=k esa lkaf[;dh; fof/;k¡

uksV 2310
x =
35
x = 66
x dk eku leh- (1) esa j[kus ij]
12y – 45x = – 1590
12y – 45 × 66 = – 1590
12y – 2970 = – 1590
12y = 1380
1380
y =
12
y = 115
lg&lEcUèk xq.kkad dh x.kukμlg&lEcUèk xq.kkad Kkr djus osQ fy, nksuksa izrhixeu xq.kkad fudkyus gksaxsA
lehdj.k Li"V :i ls ugha fn;s gSaA vr% igys dks y dk x ij vkSj nwljs dks x dk y ij izrhixeu lehdj.k
ekudj nksuksa xq.kkad fudkys tk;saxsA
y dk x ij izrhixeu x dk y ij izrhixeu
4y – 15x + 530 = 0 – 3y + 20x = 975
4y =15x 20x =3y
15 3
byx = bxy =
4 20
byx = 3.75 bxy = 0.15
r = byx − bxy

= 375. × 0 15
.
r = .75

mgkgj.k (Illustration) 11: nks ;kn`fPNd pj&ewY; x vkSj y ls lEcfUèkr izrhixeu lehdj.k fuEu izdkj gSaμ
3x + 2y – 26 = 0
6x + y – 31 = 0
Kkr dhft,μ
(d) x vkSj y osQ eè;d ewY;

([k) x vkSj y esa fu'p;u xq.kkad rFkk lg&lEcUèk xq.kkad
(x) y dk izeki fopyu σ ;fn x dk izlj.k σ x 2 = 25
y
gy (Solution): loZizFke x vkSj y osQ ewY; dh x.kuk djus ij]
3x + 2y = 26 ...(1)
6x + y = 31 ...(2)
leh- (2) esa 2 dk xq.kk djus ij
3x + 2y = 26
12x + 2y = 62 (?kVkus ij)
– – –
– 9x = – 36
− 36
x =
− 9

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