4. hipotesis bahwa model regresi linear diterima, sehingga dengan demikian tidak ada
alasan untuk mencari model regresi nonlinear.
HASIL PERHITUNGAN SPSS
Regression
Variables Entered/Removedb
Model
Variables
Entered
Variables
Removed Method
1 Xia . Enter
a. All requested variables entered.
b. Dependent Variable: Yi
Model Summary
Model R R Square
Adjusted R
Square
Std. Error of
the Estimate
1 .373a .139 .073 1.271
a. Predictors: (Constant), Xi
ANOVAb
Model
Sum of
Squares df Mean Square F Sig.
1 Regression 3.403 1 3.403 2.107 .170a
Residual 20.997 13 1.615
Total 24.400 14
a. Predictors: (Constant), Xi
b. Dependent Variable: Yi
Coefficientsa
Model
Unstandardized
Coefficients
Standardized
Coefficients
B Std. Error Beta t Sig.
1 (Constant) -.883 2.149 -.411 .688
Xi .073 .050 .373 1.452 .170
a. Dependent Variable: Yi
5. REGRESI LINEAR BERGANDA
Co. Soal
Kualitas benang telah diteliti sebanyak 15 potong. Karakteristik yang diuji dalam penelitian ini
adalah:
푋1 = panjang fiber per 0,01 inci.
푋2 = kehalusan fiber (0,1 microgram per inci fiber)
Y = kekuatan untaian benang dalam pound
Hasil penelitian diberikan dalam daftar berikut.
Benang
Nomor
푋1 푋2 푌
1 85 44 99
2 82 42 93
3 75 42 99
4 74 44 97
5 76 43 90
6 74 46 96
7 73 46 93
8 96 36 130
9 93 36 118
10 70 37 88
11 82 46 89
12 80 45 93
13 77 42 94
14 67 50 75
15 82 48 84
Akan ditentukan model regresi linier ganda sehingga dapat diramalkan kekuatan untaian
benang jika diketahui panjang dan kehalusannya.
DAFTAR HARGA-HARGA YANG DIPERLUKAN UNTUK MENGHITUNG 푎0, 푎1, 푑푎푛 푎2
Benang
Nomor
2 푋2푖
푋1푖 푋2푖 푌푖 푋1푖 푌푖 푋2푖 푌푖 푋1푖푋2푖 푋1푖
2
1 85 44 99 8415 4356 3740 7225 1936
2 82 42 93 7626 3906 3444 6724 1764
3 75 42 99 7425 4158 3150 5625 1764
4 74 44 97 7178 4268 3256 5476 1936
5 76 43 90 6840 3870 3268 5776 1849
6 74 46 96 7104 4416 3404 5476 2116
7 73 46 93 6789 4278 3358 5329 2116
8 96 36 130 12480 4680 3456 9216 1296
7. 풀̂
= ퟖퟒ, ퟑ + ퟎ, ퟗퟑ푿ퟏ − ퟏ, ퟒퟑ푿ퟐ
Regression
Variables Entered/Removed
Model
Variables
Entered
Variables
Removed Method
1 X2i, X1ia . Enter
a. All requested variables entered.
Model Summary
Model R R Square
Adjusted R
Square
Std. Error of the
Estimate
1 .892a .795 .761 6.433
a. Predictors: (Constant), X2i, X1i
ANOVAb
Model Sum of Squares df Mean Square F Sig.
1 Regression 1927.118 2 963.559 23.283 .000a
Residual 496.615 12 41.385
Total 2423.733 14
a. Predictors: (Constant), X2i, X1i
b. Dependent Variable: Yi
Coefficientsa
Model
Unstandardized Coefficients
Standardized
Coefficients
B Std. Error Beta t Sig.
1 (Constant) 84.295 36.254 2.325 .038
X1i .927 .256 .561 3.624 .003
X2i -1.431 .489 -.454 -2.929 .013
a. Dependent Variable: Yi