Tugas 3 !
| No | Skor | Turus | Frekuensi |
| 1 | 36 | I | 1 |
| 2 | 38 | I | 1 |
| 3 | 41 | II | 2 |
| 4 | 43 | I | 1 |
| 5 | 45 | I | 1 |
| 6 | 46 | I | 1 |
| 7 | 47 | II | 2 |
| 8 | 48 | I | 1 |
| 9 | 50 | III | 3 |
| 10 | 52 | I | 1 |
| 11 | 54 | IIII | 4 |
| 12 | 55 | I | 1 |
| 13 | 56 | III | 3 |
| 14 | 57 | IIII | 4 |
| 15 | 59 | III | 3 |
| 16 | 60 | II | 2 |
| 17 | 62 | III | 3 |
| 18 | 63 | II | 2 |
| 19 | 64 | II | 2 |
| 20 | 65 | II | 2 |
| 21 | 66 | III | 3 |
| 22 | 67 |
| 5 |
| 23 | 68 | II | 2 |
| 24 | 69 | III | 3 |
| 25 | 70 | III | 3 |
| 26 | 71 | II | 2 |
| 27 | 72 | III | 3 |
| 28 | 73 | II | 2 |
| 29 | 75 | II | 2 |
| 30 | 76 | I | 1 |
| 31 | 77 | II | 2 |
| 32 | 78 | I | 1 |
| 33 | 79 | I | 1 |
| 34 | 81 | II | 2 |
| 35 | 82 | I | 1 |
| 36 | 83 | I | 1 |
| 37 | 85 | I | 1 |
| 38 | 86 | I | 1 |
| 39 | 89 | I | 1 |
| 40 | 91 | III | 3 |
|
| 80 | 80 | |
N Valid = 80
Min = 36
Max = 91
1. R = skor terbesar – skor terkecil
R = 91 – 36 = 55
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2. Bk ( banyak kelas ) n = 80
Bk = 1+ 3,3 log n
= 1 + 3,3 log 80
= 1 + 3,3 (1,9031)
= 1 + 6,28
bk = 7,28 dibulatkan menjadi 7
![]()
3. Panjang kelas
P = R/bk
P = 55 / 7
![]()
P = 7,8 dibulatkan menjadi 8
4. Interval kelas
| Interval kelas | Turus | Frekuensi |
| 84 – 91 |
| 6 |
| 76 – 83 |
| 9 |
| 68 – 75 |
| 17 |
| 60 – 67 |
| 19 |
| 52 – 59 |
| 16 |
| 44 – 51 |
| 8 |
| 36 – 43 |
| 5 |
|
| 80 | 80 |
5. Grafik

6. Modus
Mo = b + p (
)
= 61,5 + 8 (
)
= 61,5 + 8 (
)
= 61,5 + 8 ( 0,57 )
= 61,5 + 4,57
![]()
Mo = 66,07 dibulatkan menjadi 66
7. Median
Me =
+ p (
)
= 61,5 + 8 (
)
= 61,5 + 8 (
)
= 61,5 + 8 ( 0,35 )
= 61,5 + 2,80
![]()
Me = 64,30 dibulatkan menjadi 64
8. Mean
![]()
X = X1 + X2 + X3 ……… Xn = 5161 = 64.51 dibulatkan menjadi 64
![]()
![]()
Xn 80
Kesimpulan
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