Soal 1
Pelajari data
yang di sajikan dibawah
ini tentang pengaruh
umur serta pemberian
makanan tinggi protein dan rendah protein terhadap panjang badan.
Tinggi Protein
|
Rendah Protein
|
||
Umur (bl)
|
Panjang (cm)
|
Umur (bl)
|
Panjang (cm)
|
2
|
50
|
4
|
52
|
5
|
54,3
|
7
|
55
|
8
|
63
|
10
|
61
|
10
|
66
|
10
|
63,4
|
10
|
69
|
15
|
66
|
14
|
73
|
20
|
68,5
|
18
|
82
|
20
|
67,9
|
20
|
83
|
24
|
72
|
20
|
80,3
|
28
|
78
|
25
|
85
|
30
|
75
|
25
|
84
|
13
|
65
|
30
|
86
|
18
|
69
|
27
|
85
|
20
|
74
|
a. Tentukan persamaan garis untuk kelompok
tinggi protein dan rendah protein secara terpisah
b. Tentukan satu persamaan garis
dengan memasukkan semua
independen variable
c. Buktikan bahwa jenis makanan
sangat mempengaruhi terhadap
panjang badan
d. Bila umur di kelompok menjadi
2 kelompok <20 dan
≥ 20 bulan, lakukan uji
regresi untuk membuktikan jenis
makanan dan umur berpengaruh
terhadap panjang badan
Jawaban :
a.
Persamaan
Garis
·
Tinggi Protein
Variables Entered/Removed
|
|||
Model
|
Variables Entered
|
Variables Removed
|
Method
|
1
|
Umur (bl)
|
.
|
Enter
|
a.
Dependent Variable: Panjang (cm)
|
|||
b.
All requested variables entered.
|
Model Summary
|
||||
Model
|
R
|
R Square
|
Adjusted R Square
|
Std. Error of the Estimate
|
1
|
,954
|
,911
|
,903
|
3,8651
|
a. Predictors: (Constant),
Umur (bl)
|
ANOVA
|
||||||
Model
|
Sum
of Squares
|
df
|
Mean
Square
|
F
|
Sig.
|
|
1
|
Regression
|
1681,302
|
1
|
1681,302
|
112,546
|
,000
|
Residual
|
164,327
|
11
|
14,939
|
|||
Total
|
1845,629
|
12
|
||||
a.
Dependent Variable: Panjang (cm)
|
||||||
b.
Predictors: (Constant), Umur (bl)
|
Coefficients
|
||||||
Model
|
Unstandardized
Coefficients
|
Standardized
Coefficients
|
t
|
Sig.
|
||
B
|
Std.
Error
|
Beta
|
||||
1
|
(Constant)
|
52,211
|
2,308
|
22,624
|
,000
|
|
Umur (bl)
|
1,317
|
,124
|
,954
|
10,609
|
,000
|
|
a. Dependent Variable: Panjang (cm)
|
Model Regeresi :
Y = β0 + β1 X1
Panjang Badan = β0 + β1
(Umur)
Panjang Badan = 52,211 + 1,317
(Umur)
·
Rendah Protein
Variables Entered/Removed
|
|||
Model
|
Variables Entered
|
Variables Removed
|
Method
|
1
|
Umur (bl)
|
.
|
Enter
|
a.
Dependent Variable: Panjang (cm)
|
|||
b.
All requested variables entered.
|
ANOVA
|
||||||
Model
|
Sum of Squares
|
df
|
Mean Square
|
F
|
Sig.
|
|
1
|
Regression
|
593,115
|
1
|
593,115
|
82,769
|
,000
|
Residual
|
78,825
|
11
|
7,166
|
|||
Total
|
671,940
|
12
|
||||
a.
Dependent Variable: Panjang (cm)
|
||||||
b.
Predictors: (Constant), Umur (bl)
|
Model Summary
|
||||
Model
|
R
|
R
Square
|
Adjusted
R Square
|
Std.
Error of the Estimate
|
1
|
,940
|
,883
|
,872
|
2,6769
|
a. Predictors: (Constant),
Umur (bl)
|
Coefficients
|
||||||
Model
|
Unstandardized
Coefficients
|
Standardized
Coefficients
|
t
|
Sig.
|
||
B
|
Std.
Error
|
Beta
|
||||
1
|
(Constant)
|
51,656
|
1,803
|
28,656
|
,000
|
|
Umur (bl)
|
,887
|
,098
|
,940
|
9,098
|
,000
|
|
a. Dependent Variable: Panjang (cm)
|
Model Regeresi :
Y = β0 + β1 X1
Panjang Badan = β0 + β1
(Umur)
Panjang Badan = 51,656 + 0,887 (Umur)
b.
Satu
Persamaan Garis
Variables Entered/Removed
|
|||
Model
|
Variables
Entered
|
Variables
Removed
|
Method
|
1
|
Jenis
Protein, Umur (bl)
|
.
|
Enter
|
a.
Dependent Variable: Panjang (cm)
|
|||
b.
All requested variables entered.
|
Model Summary
|
||||
Model
|
R
|
R
Square
|
Adjusted
R Square
|
Std.
Error of the Estimate
|
1
|
,933
|
,870
|
,859
|
4,0176
|
a. Predictors: (Constant), Jenis Protein, Umur (bl)
|
ANOVA
|
||||||
Model
|
Sum
of Squares
|
df
|
Mean
Square
|
F
|
Sig.
|
|
1
|
Regression
|
2491,971
|
2
|
1245,986
|
77,192
|
,000
|
Residual
|
371,253
|
23
|
16,141
|
|||
Total
|
2863,225
|
25
|
||||
a. Dependent Variable: Panjang (cm)
|
||||||
b. Predictors: (Constant), Jenis Protein, Umur (bl)
|
Coefficients
|
||||||
Model
|
Unstandardized
Coefficients
|
Standardized
Coefficients
|
t
|
Sig.
|
||
B
|
Std.
Error
|
Beta
|
||||
1
|
(Constant)
|
58,130
|
2,288
|
25,408
|
,000
|
|
Umur (bl)
|
-1,735
|
,631
|
-1,346
|
-2,751
|
,011
|
|
Jenis
Protein
|
,033
|
,007
|
2,240
|
4,577
|
,000
|
|
a. Dependent Variable: Panjang (cm)
|
Model Regresi :
Y = β0 + β1 X1+ β2
X2
Panjang Badan = β0 + β1
(Umur) + β2
(Jenis Protein)
Panjang Badan = 58,130 + -1,735 (Umur) + 0,033
(Jenis Protein)
c. Pengaruh Jenis
Makanan Terhadap
Panjang Badan
Variables Entered/Removed
|
|||
Model
|
Variables
Entered
|
Variables
Removed
|
Method
|
1
|
Jenis
Protein
|
.
|
Enter
|
a.
Dependent Variable: Panjang (cm)
|
|||
b.
All requested variables entered.
|
Model Summary
|
||||
Model
|
R
|
R
Square
|
Adjusted
R Square
|
Std.
Error of the Estimate
|
1
|
,910
|
,828
|
,821
|
4,5340
|
a. Predictors: (Constant), Jenis Protein
|
ANOVA
|
||||||
Model
|
Sum
of Squares
|
df
|
Mean
Square
|
F
|
Sig.
|
|
1
|
Regression
|
2369,848
|
1
|
2369,848
|
115,280
|
,000
|
Residual
|
493,376
|
24
|
20,557
|
|||
Total
|
2863,225
|
25
|
||||
a.
Dependent Variable: Panjang (cm)
|
||||||
b.
Predictors: (Constant), Jenis Protein
|
Coefficients
|
||||||
Model
|
Unstandardized
Coefficients
|
Standardized
Coefficients
|
t
|
Sig.
|
||
B
|
Std.
Error
|
Beta
|
||||
1
|
(Constant)
|
53,590
|
1,788
|
29,971
|
,000
|
|
Jenis
Protein
|
,013
|
,001
|
,910
|
10,737
|
,000
|
|
a. Dependent Variable: Panjang (cm)
|
Persamaan Garis
Lurus :
Y = β0 + β1 X1
Pengaruh Jenis Makanan terhadap
Panjang :
Lihat tabel F dengan numerator = 1 dan demorator = 24
Nilai F hitung = 115.280 >F table = 4.26, nilai p <0,05
sangat
bermakna, Sig. = 0,00
Kesimpulan :
Kita menolak hipotesis no, dan menyatakan bahwa :Jenis Makanan mempengaruhi Panjang Badan.
d. Uji Regresi Untuk
Mengetahui Pengaruh Jenis Makanan dan
Umur Terhadap Panjang
Badan dengan 2 Kelompok Umur
<20 dan ≥ 20 bulan.
Variables Entered/Removed
|
|||
Model
|
Variables
Entered
|
Variables
Removed
|
Method
|
1
|
Jenis
Protein, Umur (bl)
|
.
|
Enter
|
a.
Dependent Variable: Panjang (cm)
|
|||
b.
All requested variables entered.
|
Model Summary
|
||||
Model
|
R
|
R
Square
|
Adjusted
R Square
|
Std.
Error of the Estimate
|
1
|
,933
|
,870
|
,859
|
4,0176
|
a. Predictors: (Constant), Jenis Protein, Umur (bl)
|
ANOVA
|
||||||
Model
|
Sum
of Squares
|
df
|
Mean
Square
|
F
|
Sig.
|
|
1
|
Regression
|
2491,971
|
2
|
1245,986
|
77,192
|
,000
|
Residual
|
371,253
|
23
|
16,141
|
|||
Total
|
2863,225
|
25
|
||||
a.
Dependent Variable: Panjang (cm)
|
||||||
b.
Predictors: (Constant), Jenis Protein,
Umur (bl)
|
Coefficients
|
||||||
Model
|
Unstandardized
Coefficients
|
Standardized
Coefficients
|
t
|
Sig.
|
||
B
|
Std.
Error
|
Beta
|
||||
1
|
(Constant)
|
58,130
|
2,288
|
25,408
|
,000
|
|
Umur (bl)
|
-1,735
|
,631
|
-1,346
|
-2,751
|
,011
|
|
Jenis
Protein
|
,033
|
,007
|
2,240
|
4,577
|
,000
|
|
a. Dependent Variable: Panjang (cm)
|
Keterangan :
Umur = 1 bila ≥ 20 dan 0 bila < 20
Persamaan garis
panjang badan yang di pengaruhi jenis makanan dan
kelompok umur <20 dan ≥ 20 bulan :
Y = β0 + β1 X1+ β2
X2
Y = β0 + β1 X1+ β2
(1)
Y = (β0 + β2) + β1 X1
Y = (58,130 + 0,033) + -1,735X1
Y = 58,163 + -1,735 (Umur)
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