12 90.000
45.500 5.000
158 336
285 621
54 13
57.500 30.150
5.000 158
290 225
515 28
14 36.000
20.267 5.000
133 303
250 553
21 15
36.000 18.200
5.000 142
214 188
401 13
16 43.200
24.100 8.000
158 290
225 515
38 17
34.286 17.257
4.286 146
259 204
463 16
18 54.000
30.160 5.000
126 278
240 518
36 19
94.500 52.750
5.000 315
580 300
880 86
20 71.250
37.688 5.000
75 145
113 258
71 21
150.000 75.500
5.000 118
246 206
453 64
22 68.000
40.200 5.000
145 278
213 490
48 23
48.333 20.100
500 158
282 215
497 23
24 42.750
22.625 5.000
116 240
225 465
16 25
24.000 12.100
5.000 142
319 274
592 13
26 57.000
30.200 8.000
92 227
225 452
49 27
54.000 30.150
5.000 212
195 178
372 30
28 57.000
30.250 5.000
137 265
225 490
53 29
54.000 30.167
5.000 158
290 225
515 58
30 57.000
30.250 5.000
158 290
225 515
40 31
57.200 30.200
5.000 164
282 215
497 33
32 54.000
30.125 5.000
150 378
225 603
37 33
60.000 30.188
5.000 158
279 338
616 37
34 57.000
30.200 5.000
158 267
194 461
36 35
60.000 30.250
5.000 158
290 225
515 30
36 57.000
30.200 5.000
158 331
255 586
22 37
40.000 30.167
5.000 158
290 225
515 37
38 57.000
30.150 5.000
158 282
215 497
18 39
58.400 30.200
5.000 158
267 195
462 22
40 54.000
30.200 5.000
158 267
195 462
11 41
54.000 30.250
500 158
290 225
515 23
42 57.000
30.200 5.000
158 290
225 515
23 43
57.000 30.167
500 158
290 225
515 19
44 48.000
30.167 5.000
158 282
215 497
19 45
54.000 30.250
5.000 158
290 225
515 60
46 57.000
30.300 5.000
158 290
225 515
40 47
57.000 30.225
5.000 158
290 225
515 36
48 54.000
30.300 5.000
158 282
215 497
29 49
51.000 30.250
5.000 158
290 225
515 30
50 54.000
30.300 5.000
156 290
225 515
288
Tota l
3.453.919 1.763.55 9
245.4 52
7.971 14.64 3
11.50 9
26.151 2.289
Rata -
Rata 69.078,38 35.271,1
8 4.909,
04 159,4
2 292,8
6 230,1
8 532,02
45,18
Universitas Sumatera Utara
Lampiran 3
Regression
Descriptive Statistics
Mean Std. Deviation
N Produktivitas kgHa
5.46E4 14642.039
40 Bibit batangHa
2.95E4 7634.695
40 Pupuk Organik kgHa
5148.82 740.802
40 Pupuk N kgHa
149.95 22.548
40 Pupuk P kgHa
278.38 44.128
40 Pupuk K kgHa
221.15 47.562
40 Insektisida ccHa
2062.72 650.079
40 Tenaga Kerja HKOHa
33.25 14.726
40
Correlations
Produktivit as kgHa
Bibit batangH
a Pupuk
Organi k
kgHa Pupuk
N kgH
a Pupuk
P kgH
a Pupuk
K kgH
a Insektisid
a ccHa
Tenaga Kerja
HKOH a
Pearson Correlatio
n Produktivit
as kgHa 1.000
.966 .064 -.007
.102 .053
-.170 .464
Bibit batangHa
.966 1.000
.058 .011
.096 -.007 -.134
.485 Pupuk
Organik kgHa
.064 .058 1.000 -.076
.131 .242
.556 .280
Pupuk N kgHa
-.007 .011 -.076 1.000
.461 .316
-.211 -.160
Pupuk P kgHa
.102 .096
.131 .461 1.000
.716 -.118
-.010 Pupuk K
kgHa .053
-.007 .242
.316 .716 1.000
-.032 -.038
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Insektisida ccHa
-.170 -.134
.556 -.211 -.118 -.032 1.000
.085 Tenaga
Kerja HKOHa
.464 .485
.280 -.160 -.010 -.038 .085
1.000 Sig. 1-
tailed Produktivit
as kgHa .
.000 .347
.484 .266
.372 .147
.001 Bibit
batangHa .000
. .362
.474 .277
.484 .205
.001 Pupuk
Organik kgHa
.347 .362
. .321
.211 .066
.000 .040
Pupuk N kgHa
.484 .474
.321 .
.001 .023
.096 .162
Pupuk P kgHa
.266 .277
.211 .001
. .000
.234 .475
Pupuk K kgHa
.372 .484
.066 .023
.000 .
.423 .409
Insektisida ccHa
.147 .205
.000 .096
.234 .423
. .302
Tenaga Kerja
HKOHa .001
.001 .040
.162 .475
.409 .302
. N
Produktivit as kgHa
40 40
40 40
40 40
40 40
Bibit batangHa
40 40
40 40
40 40
40 40
Pupuk Organik
kgHa 40
40 40
40 40
40 40
40 Pupuk N
kgHa 40
40 40
40 40
40 40
40 Pupuk P
kgHa 40
40 40
40 40
40 40
40 Pupuk K
kgHa 40
40 40
40 40
40 40
40
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Insektisida ccHa
40 40
40 40
40 40
40 40
Tenaga Kerja
HKOHa 40
40 40
40 40
40 40
40
Variables EnteredRemoved
b
Model Variables Entered
Variables Removed
Method 1
Tenaga Kerja HKOHa, Pupuk
P kgHa, Insektisida
ccHa, Pupuk N kgHa, Bibit
batangHa, Pupuk Organik
kgHa, Pupuk K kgHa
a
. Enter
a. All requested variables entered. b. Dependent Variable: Produktivitas kgHa
Model Summary
b
Model R
R Square
Adjusted R Square
Std. Error of the Estimate
Change Statistics R Square
Change F
Change df1 df2 Sig. F
Change 1
.971
a
.943 .930
3867.754 .943
75.274 7 32
.000 a. Predictors: Constant, Tenaga Kerja HKOHa, Pupuk P kgHa, Insektisida ccHa, Pupuk N
kgHa, Bibit batangHa, Pupuk Organik kgHa, Pupuk K kgHa b. Dependent Variable: Produktivitas kgHa
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ANOVA
b
Model Sum of Squares
df Mean Square
F Sig.
1 Regression
7.882E9 7
1.126E9 75.274
.000
a
Residual 4.787E8
32 1.496E7
Total 8.361E9
39 a. Predictors: Constant, Tenaga Kerja HKOHa, Pupuk P kgHa, Insektisida ccHa, Pupuk N kgHa,
Bibit batangHa, Pupuk Organik kgHa, Pupuk K kgHa b. Dependent Variable: Produktivitas kgHa
Coefficients
a
Model Unstandardized
Coefficients Standardized
Coefficients t
Sig. Collinearity
Statistics B
Std. Error Beta
Tolerance VIF
1 Constant 2329.863
6775.258 .344 .733
Bibit batangHa 1.856
.096 .968 19.428 .000
.721 1.387 Pupuk Organik
kgHa .553
1.114 .028
.497 .623 .564 1.775
Pupuk N kgHa -22.698
31.895 -.035 -.712 .482
.742 1.348 Pupuk P kgHa
-21.309 21.776
-.064 -.979 .335 .415 2.407
Pupuk K kgHa 33.146
19.352 .108 1.713 .096
.453 2.209 Insektisida ccHa
-1.501 1.212
-.067 -1.238 .225 .618 1.619
Tenaga Kerja HKOHa
-9.908 51.159
-.010 -.194 .848 .676 1.480
a. Dependent Variable: Produktivitas kgHa
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Collinearity Diagnostics
a
Mod el
Dimensi on
Eigenval ue
Conditi on
Index Variance Proportions
Consta nt
Bibit batang
Ha Pupuk
Organ ik
kgH a
Pupu k N
kgH a
Pupu k P
kgH a
Pupu k K
kgH a
Insektisi da
ccHa Tenaga
Kerja HKOH
a 1
1 7.660
1.000 .00
.00 .00
.00 .00
.00 .00
.00 2
.154 7.055
.00 .02
.00 .01
.00 .01
.01 .51
3 .097
8.895 .00
.04 .00
.01 .01
.01 .40
.00 4
.042 13.552 .00
.63 .00
.00 .01
.10 .02
.34 5
.023 18.443 .04
.24 .00
.30 .00
.28 .03
.06 6
.012 25.467 .06
.02 .58
.16 .04
.00 .53
.06 7
.007 32.217 .04
.03 .01
.37 .82
.47 .00
.00 8
.006 36.248 .85
.03 .41
.17 .12
.13 .01
.01 a. Dependent Variable: Produktivitas
kgHa
Residuals Statistics
a
Minimum Maximum
Mean Std. Deviation
N Predicted Value
23530.47 93971.75
5.46E4 14216.709
40 Std. Predicted Value
-2.184 2.771
.000 1.000
40 Standard Error of Predicted
Value 685.603
2925.472 1.587E3
695.857 40
Adjusted Predicted Value 23333.13
93319.91 5.45E4
14144.940 40
Residual -1.415E4
5124.741 .000
3503.495 40
Std. Residual -3.659
1.325 .000
.906 40
Stud. Residual -3.887
1.422 .014
.967 40
Deleted Residual -1.597E4
6732.642 125.567
4017.114 40
Stud. Deleted Residual -5.266
1.447 -.026
1.133 40
Mahal. Distance .250
21.337 6.825
6.546 40
Cooks Distance .000
.243 .018
.043 40
Centered Leverage Value .006
.547 .175
.168 40
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Residuals Statistics
a
Minimum Maximum
Mean Std. Deviation
N Predicted Value
23530.47 93971.75
5.46E4 14216.709
40 Std. Predicted Value
-2.184 2.771
.000 1.000
40 Standard Error of Predicted
Value 685.603
2925.472 1.587E3
695.857 40
Adjusted Predicted Value 23333.13
93319.91 5.45E4
14144.940 40
Residual -1.415E4
5124.741 .000
3503.495 40
Std. Residual -3.659
1.325 .000
.906 40
Stud. Residual -3.887
1.422 .014
.967 40
Deleted Residual -1.597E4
6732.642 125.567
4017.114 40
Stud. Deleted Residual -5.266
1.447 -.026
1.133 40
Mahal. Distance .250
21.337 6.825
6.546 40
Cooks Distance .000
.243 .018
.043 40
Centered Leverage Value .006
.547 .175
.168 40
a. Dependent Variable: Produktivitas kgHa
Charts
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Universitas Sumatera Utara
DAFTAR PUSTAKA
Agung, I Gusti Ngurah Agung. N Haidy A Pasay. Sugiharso. 2008. Teori Ekonomi Mikro : Suatu Analisis Produksi Terapan. PT Raja Grafindo
Persada. Jakarta. Balai Pegkajian Teknologi Pertanian BPTP Sumatera Utara. 2012. Budidaya
Sayuran. BPTP Sumut. Sumatera Utara Badan Pusat Statistik. 2015. Karo Dalam Angka 2015. Sumatera Utara.
Kusumaningsih, Riana Dewi. 2010. Analisis Efisiensi Ekonomi Penggunaan Faktor – Faktor Produksi Pada Usahatani Kubis di Kabupaten
Karanganyar. Universitas Sebelas Maret. Surakarta Mubyarto. 1989. Pengantar Ekonomi Pertanian. LP3ES. Jakarta.
Murdiantoro, Bayu. 2011. Faktor – Faktor Yang Mempengaruhi Produksi Padi Di Desa Pulorejo Kecamatan Winong Kabupaten Pati.
Institut Pertanian Bogor. Bogor. Pracoyo, T. K. dan Pracoyo. 2006. Aspek Dasar Ekonomi Mikro.
PT Grasindo. Jakarta. Pindyck, R.S. dan Rubinfield. 2008. Mikroekonomi : Jilid 1 Edisi Keenam.
PT Indeks. Jakarta. Rahayu, Sri Yayu; Netti Nurlenawati; Endah Fitriyah; Agustriani Ramana
Fitriyah; Agustriani Ramana Sidik. 2015. Pengaruh Kombinasi Dosis Pupuk Nitrogen dan Pupuk Kandang Sapi Terhadap Pertumbuhan dan
Hasil Tanaman Kubis Brassica oleraceae Var botrytis L. Unsika. Karawang.
Rifqie, Ade Suryani. 2008. Analisis Faktor – Faktor Yang Mempengaruhi Produksi Usahatani Kubis Studi Kasus di Desa Cimenyan Kecamatan
Cimenyan Kabupaten Bandung. Institut Pertanian Bogor. Bogor. Sinuhaji, N. 2013. Analisis Harga Domestik dan Harga Ekspor Kubis di Singaura
terhadap Ekspor Kubis Brassica O. Capitata Dari Kabupaten Karo. Jurnal. Volume: III. No. 01. Hal : 14.
Soekartawi. 2003. Agribisnis : Teori dan Aplikasinya. PT Raja Grafindo Persada. Jakarta.
Sumpena, Uum. 2012. Budidaya Kubis. Jurnal Badan Penelitian dan Pengembangan Pertanian Kementrian Pertanian.
Sunarjono, Hendro. 2015. Bertanam 36 Jenis Sayuran. Penebar Swadaya. Jakarta. Suratiyah, Ken. 2003. Ilmu Usahatani. PT Raja Grafindo Persada. Jakarta.
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BAB III METODE PENELITIAN
3.1 Metode Penentuan Daerah Penelitian
