Pert 12 Korelasi
15
Jan 21, 2016 sugeng gizi@yahoo.com 1 JI KORELASI & JI REGRESI Sugeng Wiyono, SKM,M.Kes
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Transcript of Pert 12 Korelasi
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Jan 21, 2016 [email protected] 1
JI KORELASI
&
JI REGRESI
Sugeng Wiyono, SKM,M.Kes
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∑−∑∑−∑
∑ ∑ ∑−=
n
2Y)()2Y[(*
n
2X)()2X(
nY)X)((XY
r
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31
===
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REGRESI
Jan 21, 2016 [email protected] !
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Jan 21, 2016 [email protected] "
Men#e$as%an &en'u% hu&ungan an'a(a %e)ua *a(ia&e$
sehingga )a+a' un'u% mem+(e)i%si - a%an )ii%u'i o%$eh
*a(ia&e$ )e+en)en /, sehingga )a+a' )i&ua' sua'u
+e(samaan a(isnya .
a(i ni$ai %oeisien 's&. )a+a' )iana$isis $e&ih $an#u'
%e'e(gan'ungan sa'u *a(ia&e$ 'e(ha)a+ *a(ia&e$ yang $ain)engan ana$isis eg(esi inea( se)e(hana.
i&ua' )engan mem&ua' ga(is (e%aan yang $inea( +a)a
)iag(am 'e&a(nya.
a(is (e%aan 's& sea%an me(u+a%an +enyusu'an
(eg(esse) 'i'i%'i'i% +engama'anyang 'e(se&a(.
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engan menge'ahui +e(samaan ga(is (eg(esi $inea( 's& )a+a')i$iha' gam&a(an ni$ai sa'u *a(a&e$ 'e(gan'ung
*a(ia&e$ yang $ain.Seca(a ma'ema'is +e(samaan ga(is $inea(se)e(hana a)a$ah
/ = a &-
)imana 7
/ = 8a(ia&e$ )e+en)en 9- = *a(ia&e$ in)+en)ena = :n'e(ce+', )ia('i%an se&agai &esa(nya sua'u 'e'a+an
%e'i%a -=0
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-
/
∑ −
∑ ∑ ∑−
=
n
X X
22 )()(
nY)X)((XY
b X bYa −=
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eg(esi
inea(
ogis'i%
Se)e(hana
;e(gan)a
Se)e(hana
;e(gan)a
/=a&-
/=a<&-1<&-2<&-3<...
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n
2X)()2X(
n
Y)X)((XY
b
∑−∑
∑
∑ ∑−
= 0,16
5
2
(150)4750
5
(150)(31)970
b =
−
−
=
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