Lampiran 11
Analisis Reliabilitas Instrumen Penelitian
No Nama Siswa
Skor Soal
Skor Total (Y)
Kuadrat Skor Total (Y2)
1 2 3 4 5
1 Alief Qufron .M. 9 5 10 6 9 39 1521
2 Arifan Absi 5 13 10 8 9 45 2025
3 Fahmi Muhlisin 8 13 7 8 7 43 1849
4 Fatimatuz Zahroh 6 16 11 16 3 52 2704
5 Gunawan Agus .S 8 11 14 11 9 53 2809
6 Indah Puspita Sari 10 13 25 8 17 73 5329
7 Indah Rudani 10 16 5 12 8 51 2601
8 Inong Adi Putra S 6 9 16 13 11 55 3025
9 Lilis Ratnasari 8 6 20 12 7 53 2809
10 Milinia
Romadoni 7 19 7 8 8 49 2401
11 Mellynia Dewi A 6 11 14 15 14 60 3600
12 Moh. Faik Sudafi 10 11 11 13 16 61 3721
13 Moh. Syafi’i 8 17 10 16 16 67 4489
14 Moh. Sahari 10 20 7 13 9 59 3481
15 Nur Aisyah 8 17 23 16 18 82 6724
16 Nurlailatul .U 8 17 22 20 15 82 6724
17 Pradita Bela .A 8 3 7 17 14 49 2401
18 Puji Anzi Eka .S 10 19 23 20 20 92 8464
19 Retno Puspita .S 4 20 8 18 18 68 4624
20 Rhoihan Akbar M 8 11 11 12 14 56 3136
21 Rizka Yulistia .W 10 16 25 12 17 80 6400
22 Sitti Apriyanti 8 9 18 9 7 51 2601
23 Sitti Nurjannah 7 18 11 13 15 64 4096
24 Sulfiana Safitri 10 20 25 17 18 90 8100
25 Wildatul Nasihah 4 3 10 8 3 28 784
26 Yesi Mukawwah 6 18 25 14 18 81 6561
27 Yuli Astutik 8 14 19 13 14 68 4624
28 Yurik Setiawan 6 15 13 12 15 61 3721
Σ X 216 380 407 360 349 1712 111324
Σ X 2 1756 5858 7113 5014 4983
σ 12 = Σ X 2
−(Σ X) 2
N N σ 12 =
1756−46656
28
28
= 1756−281666,28
= 89,72 28 = 3,204
σ 22 =
5858−144400
28 28
= 5858−285157,14
= 700,86 28 = 25,030
σ 32 =
7113−165649
28 28
= 7113−285916,03
= 1196,97 28 = 42,748
σ 42 =
5014−129600
28 28
= 5014−4628,57 28
σ 52 =
4983−121801
28 28
= 4983−4350 28
= 63328
= 22,607
2. Jumlah Varian Masing-Masing Soal
Σ σ b2= σ 12 + σ 22 + σ 32 + σ 42 + σ 52
= 3,204 + 25,030 + 42,748 + 13,765 + 22,607 = 107,354
3. Mencari Varian Total
σ t2 = Σ Y 2
−(Σ Y)
2
N N
= 111324−
2930944 28 28
= 111324−104676,57128
= 237,408
r
11=[
k(k−1)
]
[
1− Σ σb2σt2
]
=
[
5(5−1)
]
[
1−107,354 234,408
]
=
[
54
]
[
1−0,457]
= (1,25) (0,543) = 0,678
Nilai
r
11atau koefisien reliabilitas yang diperoleh adalah 0,688 kemudiandikorelasikan pada tabel