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DATA NILAI TES KELAS A DAN KELAS B |
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Kelas A | Kelas B |
78 | 82 | 88 | 84 | 80 | 76 |
70 | 70 | 66 | 89 | 82 | 98 |
68 | 92 | 58 | 89 | 78 | 80 |
72 | 58 | 66 | 78 | 80 | 89 |
72 | 96 | 78 | 76 | 80 | 84 |
76 | 80 | 66 | 80 | 93 | 87 |
72 | 68 | 86 | 78 | 80 | 76 |
80 | 66 | 58 | 84 | 80 | 91 |
78 | 50 | 86 | 82 | 78 | 80 |
76 | 68 | 50 | 76 | 80 | 78 |
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KELAS A |
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NilaiTertinggi | =96 |
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NilaiTerendah | =50 |
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Hipotesis |
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Ho=Nilai A berasal dari populasi distribusi normal | |
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H1=Nilai A tidak berasal dari populasi berdistribusi normal
Panjang kelas= 96 - 50/6
=7,66=8 |
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Interval |
fo |
fh |
fo-fh |
(fo-fh)^2 |
(fo-fh)^2/fh |
50-57 |
2 |
1 |
1 |
1 |
1 |
58-65 |
3 |
4 |
-1 |
1 |
0,25 |
66-73 |
12 |
10 |
2 |
4 |
0,4 |
74-81 |
7 |
10 |
-3 |
9 |
0,9 |
82-89 |
4 |
4 |
0 |
0 |
0 |
90-97 |
2 |
1 |
1 |
1 |
1 |
Jumlah |
30 |
30 |
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3,55 |
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X^2 Hitung =3,55 |
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dk=6-1 |
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taraf signifikan a =5% |
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x^2 tabel =11,070 |
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Karena harga X^2 hitung < x^ tabel maka ho diterima |
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Jadi, kelas A berasal dari populasi distribusi normal |
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KELAS B |
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Nilai TeRtinggi=98 |
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Nilai Terendah=76 |
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Hipotesis |
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H0=Nilai B berasal dari populasi distribusi normal |
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H1=Nilai B tidak berasal dari populasi berdistribusi normal
Panjang Kelas= 98-76/6=3,66=4 |
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Interval |
fo |
fh |
fo-fh |
(fo-fh)^2 |
(fo-fh)^2/fh |
76-79 |
9 |
1 |
8 |
64 |
64 |
80-83 |
11 |
4 |
7 |
49 |
12,25 |
84-87 |
4 |
10 |
-6 |
36 |
3,6 |
88-91 |
4 |
10 |
-6 |
36 |
3,6 |
92-95 |
1 |
4 |
-3 |
9 |
2,25 |
96-99 |
1 |
1 |
0 |
0 |
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Jumlah |
30 |
30 |
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85,7 |
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X^2 Hitung=85,7 |
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dk=6-1 |
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taraf signifikan a =5% |
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x^2 tabel=11,070 |
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Karena harga X^2 hitung < x^ tabel maka ho ditolak |
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Jadi, kelas B tidak berasal dari populasi distribusi normal |
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Uji Homogenitas |
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Kelas | (n-1) | Si^2 | logSi^2 | (n-1)logSi^2 |
A | 29 | 129,016 | 2,110643573 | 61,208664 |
B | 29 | 31,062 | 1,492229415 | 43,274653 |
Total | 58 | 160,078 | 3,602872988 | 104,48332 |
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Menentukan Varians gabungan |
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Sg^2 = (30-1).(129,016)+(30-1).(31,062)
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=80,039 |
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Koefisien Bartlett |
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B =(log Sg^2)
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B = 110,3914959
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Statistic Uji Barlett |
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x^2=13,60417358
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Kemudian Bandingkan dengan x^2 Tabel |
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dk=k-1 |
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dk=2-1 |
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a=5% | |
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x^2 tabel=3,841 dan x^2 hitung = 13,60417358 |
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Karena x^2 hitung <x^2 tabel maka Ho ditolak |
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jadi ada perbedaan antara kedua varians |
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