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One Way Anova

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One Way Anova

  1. 1. Data biaya promosi , biaya distribusi dan volume penjualan http://www.azuarjuliandi.com/openarticles/korelasiregresi.pdf METODE NILAI 1 500 1 640 1 720 1 890 1 1010 2 840 2 980 2 1060 2 1230 2 1460 3 1090 3 1300 3 1420 3 1675 3 1855 ANOVA adalah singkatan dari Analysis of Variance. Latar belakang dikembangkan metoda ini karena ingin dilakukan testing terhadap rata-rata populasi yg mengalami “perlakuan” yg berbeda-beda. Pertanyaannya : apakah perbedaan rata-rata antara berbagai grup yg mengalami perlakuan berbeda tsb signifikan atau tidak. Asumsi untuk ujia ANOVA adalah: Populasi semuanya normal Standard deviasi populasi sama Populasi independen MIsal ada 4 grup A,B,C dan D dengan rata-rata sampel xA, xB, xC dan xD. Ingin diketahui apakah rata-rata populasi yg terkait dengan sampel tsb sama? Tentu saja kita bisa melakukan uji statistik bagi tiap sepasang mean, misal μA=μB lalu μA=μC dst. Semuanya ada 6 pasangan yg mungkin, jadi ada 6 uji yg harus dilakukan. Untuk masing-masing dilakukan test-t
  2. 2. Oneway Descriptives nilai 95% Confidence Interval for Mean N Mean Std. Deviation Std. Error Lower Bound Upper Bound Minimum Maximum biayapromosi 5 752.0000 201.66804 90.18869 501.5961 1002.4039 500.00 1010.00 biayadistribusi 5 1114.0000 239.33240 107.03271 816.8296 1411.1704 840.00 1460.00 panjualan 5 1468.0000 302.50207 135.28304 1092.3941 1843.6059 1090.00 1855.00 Total 15 1111.3333 381.68081 98.54956 899.9655 1322.7011 500.00 1855.00 Test of Homogeneity of Variances nilai Levene Statistic df1 df2 Sig. .544 2 12 .594 ANOVA nilai Sum of Squares df Mean Square F Sig. Between (Combined) 1281693 2 640846.667 10.148 .003 Groups Linear Term Contrast 1281640 1 1281640.000 20.294 .001 Deviation 53.333 1 53.333 .001 .977 Within Groups 757830.0 12 63152.500 Total 2039523 14 Contrast Coefficients metodepenjualan biayadistr Contrast biayapromosi ibusi panjualan 1 .5 .5 1
  3. 3. Contrast Tests Value of Contrast Contrast Std. Error t df Sig. (2-tailed) nilai Assume equal variances 1 2401.0000a 137.64356 17.444 12 .000 Does not assume equal 1 2401.0000a 152.31218 15.764 6.199 .000 variances a. The sum of the contrast coefficients is not zero. Post Hoc Tests Multiple Comparisons Dependent Variable: nilai Mean Difference 95% Confidence Interval (I) metodepenjualan (J) metodepenjualan (I-J) Std. Error Sig. Lower Bound Upper Bound Tukey HSD biayapromosi biayadistribusi -362.00000 158.93709 .098 -786.0225 62.0225 panjualan -716.00000* 158.93709 .002 -1140.0225 -291.9775 biayadistribusi biayapromosi 362.00000 158.93709 .098 -62.0225 786.0225 panjualan -354.00000 158.93709 .107 -778.0225 70.0225 panjualan biayapromosi 716.00000* 158.93709 .002 291.9775 1140.0225 biayadistribusi 354.00000 158.93709 .107 -70.0225 778.0225 LSD biayapromosi biayadistribusi -362.00000* 158.93709 .042 -708.2942 -15.7058 panjualan -716.00000* 158.93709 .001 -1062.2942 -369.7058 biayadistribusi biayapromosi 362.00000* 158.93709 .042 15.7058 708.2942 panjualan -354.00000* 158.93709 .046 -700.2942 -7.7058 panjualan biayapromosi 716.00000* 158.93709 .001 369.7058 1062.2942 biayadistribusi 354.00000* 158.93709 .046 7.7058 700.2942 *. The mean difference is significant at the .05 level.
  4. 4. Homogeneous Subsets nilai Subset for alpha = .05 metodepenjualan N 1 2 3 Tukey HSDa biayapromosi 5 752.0000 biayadistribusi 5 1114.0000 1114.0000 panjualan 5 1468.0000 Sig. .098 .107 Duncan a biayapromosi 5 752.0000 biayadistribusi 5 1114.0000 panjualan 5 1468.0000 Sig. 1.000 1.000 1.000 Means for groups in homogeneous subsets are displayed. a. Uses Harmonic Mean Sample Size = 5.000. Means Plots 1400.00 Mean of nilai 1200.00 1000.00 800.00 biayapromosi biayadistribusi panjualan metodepenjualan

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