Tugas Statistik Anova Word Titania Agustin 15330059.docx

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“Seorang peneliti ingin membandingkan penjualan handphone dengan merek iphone,Samsung, oppo, dan xiaomi”. Di mana para pembeli handphone di took-toko tertentu hanya dihadapakan pada keempat merek tersebut. Pertanyannya: Apakah terdapat perbedaan rata-rata dalam penjualan keempat handphone tersebut? Minggu

Iphone

Samsung

Oppo

Xiaomi

1 2 3 4 5 6 7 8 9 10

60 59 55 45 51 52 58 54 58 55

56 53 49 44 54 55 54 51 45 47

45 44 41 36 38 35 42 44 43 44

42 39 38 36 35 34 33 34 40 41

HIPOTESIS Ho:Tidak ada perbedaan rata-rata dalam penjualan ke empat handphone H1: Ada perbedaan rata-rata dalam penjualan ke empat handphone Anova: Single Factor SUMMARY Groups iphone samsung oppo xiaomi

Count 10 10 10 10

ANOVA Source of Variation Between Groups Within Groups

SS 1992,08 562,90

Total

2554,98

Sum 547 508 412 372

df 3 36 39

Average Variance 54,70 20,46 50,80 18,62 41,20 13,07 37,20 10,4

MS 664,03 15,64

F 42,47

P-value 6,5E-12

F crit 2,87

Rata-rata terbesar di Iphone dan terkecil di Xiaomi,sedangkan varian atau ragam terbesar di iphone dan terkecil di Xiaomi. Pengujian data : Fhitung = F =42,47 pembanding Ftabel = Fcrit = 2,87 Fhitung > Ftabel maka Ho tidak di terima Kesimpulan Ada perbedaan rata-rata dalam penjualan ke empat handphone

ANOVA Merek_HP Sum of Squares Between Groups

Mean Square

1992.075

3

664.025

562.900

36

15.636

2554.975

39

Within Groups Total

df

F

Sig.

42.467

.000

UJI STELAH ANOVA LSD Multiple Comparisons Dependent Variable: Merek_HP LSD Mean Difference (I) Kode_HP

(J) Kode_HP

1

2

3.900*

1.768

.034

.31

7.49

3

13.500*

1.768

.000

9.91

17.09

4

17.500*

1.768

.000

13.91

21.09

1

-3.900*

1.768

.034

-7.49

-.31

3

9.600*

1.768

.000

v6.01

13.19

4

13.600*

1.768

.000

10.01

17.19

1

-13.500*

1.768

.000

-17.09

-9.91

2

-9.600*

1.768

.000

-13.19

-6.01

4

4.000*

1.768

.030

.41

7.59

1

-17.500*

1.768

.000

-21.09

-13.91

2

-13.600*

1.768

.000

-17.19

-10.01

3

-4.000*

1.768

.030

-7.59

-.41

2

3

4

(I-J)

95% Confidence Interval Std. Error

*. The mean difference is significant at the 0.05 level.

Sig.

Lower Bound

Upper Bound

PENGUJIAN DATA Sig = 0,000 pembanding α= 0,05 Sig < α Maka Ho ditolak Kesimpulan : Jadi tidak terjadi perbedaan rata-rata penjualan ke empat handphone

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