Nama NIM Subject
: M. Akbar Syawal : 108082000044 Accounting 2B : Statistika
Data 70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89
90 91 92 93 94 95 96 97 98 99
n = 30 Aturan Lind 2k > n 25 > 30 32 > 30
H = 99 L = 70 K=5
i ≥ H-L = 99 – 70 = 29 = 5.8 ≈ 6 k 5 5 i = 6 - 0.1 = 5.9 (validitas) Jadi, rangenya 70 – 75.9
Data Tersusun Nilai 70 – 75.9 76 – 81.9 82 – 87.9 88 – 93.9 94 – 99.9 ∑ SR
fi 6 6 6 6 6
xi 73 79 85 91 97
fi.xi 438 474 510 546 582 2550
= 1/n ∑│xi - x│ fi = 1/30 . 216 = 7.2
Data Tidak Tersusun Nilai (xi) 70 71 72 73 74 75 76 77 78 79 80
X 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5
│xi - x│ 14.5 13.5 12.5 11.5 10.5 9.5 8.5 7.5 6.5 5.5 4.5
x 85 85 85 85 85
│xi - x│ 12 6 0 6 12 36
│xi - x│fi 72 36 0 36 72 216
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 ∑ = 2535
8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5 8 4.5
3.5 2.5 1.5 0.5 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 ∑ = 225
SR
= 1/n ∑│xi - x│ = 1/30 . 225 = 7.5