155
B. Pretest Kontrol
1. Banyaknya data n = 38
2. Data pretest siswa kelas kontrol
No Nilai
Pretest No
Nilai Pretest
No Nilai
Pretest No
Nilai Pretest
1 20.00
11 40.00
21 46.67
31 53.33
2 30.00
12 40.00
22 46.67
32 56.67
3 33.33
13 40.00
23 46.67
33 56.67
4 33.33
14 40.00
24 46.67
34 56.67
5 33.33
15 40.00
25 46.67
35 56.67
6 33.33
16 40.00
26 50.00
36 60.00
7 36.67
17 43.33
27 50.00
37 60.00
8 36.67
18 43.33
28 53.33
38 63.33
9 36.67
19 46.67
29 53.33
10 36.67
20 46.67
30 53.33
3. Nilai terbesar = 63.33
4. Nilai terkecil = 20
5. Rentang data R = nilai terbesar
– nilai terkecil = 63.33
– 20 = 43.33
6. Jumlah interval kelas k = 1 + 3.3 log n = 1 + 3.3 log 38
= 1 + 3.3 1.5798 = 1 + 5.2133
= 6.2133
= 7 dibulatkan ke atas
7. Panjang interval kelas i =
k R
=
156 = 6.19
= 7 dibulatkan ke atas
8. Tabel distribusi frekuensi
Kelas Inte rval
F Nilai
Tengah X
FX X2
Batas Nyata fkb
fka Bawah
Atas
20 -26 1
23 23
529 19.5
26.5 38
1 27 - 33
5 30
150 900
26.5 33.5
37 6
34 - 40 10
37 370
1369 33.5
40.5 32
16 41 - 47
9 44
396 1936
40.5 47.5
22 25
48 - 54 6
51 306
2601 47.5
54.5 13
31 55 - 61
6 58
348 3364
54.5 61.5
7 37
62 - 68 1
65 65
4225 61.5
68.5 1
38
Jumlah 38
1658 Mean
43.6316
Median 45.1900
Modus 36.0200
Standar Deviasi
9.7335
Varians
94.7411
157
C. Posttest Eksperimen
1. Banyaknya data n = 38
2. Data posttest siswa kelas eksperimen
No Nilai
Posttest No
Nilai Posttest
No Nilai
Posttest No
Nilai Posttest
1 53.33
11 66.67
21 73.33
31 76.67
2 56.66
12 66.67
22 73.33
32 76.67
3 56.67
13 70.00
23 73.33
33 80.00
4 56.67
14 70.00
24 73.33
34 83.33
5 56.67
15 70.00
25 73.33
35 83.33
6 60.00
16 70.00
26 73.33
36 83.33
7 60.00
17 70.00
27 73.33
37 90.00
8 63.33
18 70.00
28 76.67
38 90.00
9 63.33
19 70.00
29 76.67
10 66.67
20 70.00
30 76.67
3. Nilai terbesar = 90
4. Nilai terkecil = 53.33
5. Rentang data R = nilai terbesar
– nilai terkecil = 90
– 53.33 = 36.67
6. Jumlah interval kelas k = 1 + 3.3 log n = 1 + 3.3 log 38
= 1 + 3.3 1.5798 = 1 + 5.2133
= 6.2133
= 7 dibulatkan ke atas
7. Panjang interval kelas i =
k R
=
158 = 5.2386
= 6 dibulatkan ke atas
8. Tabel distribusi frekuensi
Kelas Inte rval
F Nilai
Tengah X
FX X2
Batas Nyata fkb
fka Bawah
Atas
50 - 55 1
52.5 52.5
2756.25 49.5
55.5 38
1 56 - 61
6 58.5
351 3422.25
55.5 61.5
37 7
62 - 67 5
64.5 322.5
4160.25 61.5
67.5 31
12 68 - 73
15 70.5
1057.5 4970.25 67.5
73.5 26
27 74 - 79
5 76.5
382.5 5852.25
73.5 79.5
11 32
80 - 85 4
82.5 330
6806.25 79.5
85.5 6
36 86 - 91
2 88.5
177 7832.25
85.5 91.5
2 38
Jumlah 38
2673 Mean
70.3421
Median 70.6800
Modus 69.7800
Standar Deviasi
9.0271
Varians
81.4885
159
D. Posttest Kontrol
1. Banyaknya data n = 38
2. Data pretest siswa kelas kontrol
No Nilai
Posttest No
Nilai Posttest
No Nilai
Posttest No
Nilai Posttest
1 40.00
11 53.33
21 60.00
31 70.00
2 46.67
12 53.33
22 60.00
32 73.33
3 50.00
13 56.67
23 60.00
33 73.33
4 50.00
14 56.67
24 63.33
34 76.67
5 50.00
15 56.67
25 63.33
35 76.67
6 50.00
16 56.67
26 63.33
36 76.67
7 50.00
17 60.00
27 66.67
37 80.00
8 50.00
18 60.00
28 70.00
38 80.00
9 53.33
19 60.00
29 70.00
10 53.33
20 60.00
30 70.00
3. Nilai terbesar = 80
4. Nilai terkecil = 40
5. Rentang data R = nilai terbesar
– nilai terkecil = 80
– 40 = 40
6. Jumlah interval kelas k = 1 + 3.3 log n = 1 + 3.3 log 38
= 1 + 3.3 1.5798 = 1 + 5.2133
= 6.2133
= 7 dibulatkan ke atas
7. Panjang interval kelas i =
k R
= = 5.7143
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