Page 213 - DECO504_STATISTICAL_METHODS_IN_ECONOMICS_HINDI
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bdkbZ—13% lk/kj.k izrhixeu xq.kkad fof/
gy (Solution) : uksV
izrhixeu xq.kkadksa dk ifjdyu
(X – A) Blood (Y – A)
Age A = 62 Pressure A = 140
X dx dx 2 Y dy dy 2 dxdy
56 – 6 36 147 + 7 49 – 42
42 – 20 400 125 – 15 225 + 300
72 + 10 100 160 + 20 400 + 200
36 – 26 676 118 – 22 484 + 572
63 + 1 1 149 + 9 81 + 9
47 – 15 225 128 – 12 144 + 180
55 – 7 49 150 + 10 100 – 70
49 – 13 169 145 + 5 25 – 65
38 – 24 576 115 – 25 625 + 600
42 – 20 400 140 0 0 0
68 + 6 36 152 + 12 144 + 72
60 – 2 4 155 + 15 225 – 30
628 – 116 2672 1684 4 2502 1726
Σx Σdx Σdx 2 Σy Σdy Σdy 2 Σdxdy
X dk Y ij izrhixeu lehdj.k
X – X = bxy (Y – Y )
ΣX 628
X = = = 52.33
N 12
ΣY 1684
Y = = = 140.33
N 12
N.Σ ( dx )( dy )
Σdxdy
Σ−
bxy =
Σdy −
N.Σ 2 ( dy ) 2
12 × 1726 − ( 116)(4)
=
12 × 2502 − (4) 2
20712 + 464
=
30024 − 16
21176
= = .706
30008
X – X = bxy (Y – Y )
X – 52.33 = .706 (Y – 140.33)
X – 52.33 = .706Y – 99.07 + 52.33
X = .706Y – 99.07 + 52.33
X = .706Y – 46.74
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