1. Dari data sampel 49 penghasilan keluarga marginal berikut (ribu per hari), cari nilai mean (rata-rata), median dan modus
50, 51, 48, 47, 60, 65, 42, 90, 88, 90
70, 66, 63, 64, 65, 42, 60, 76, 95, 76
61, 60, 60, 51, 53, 54, 71, 89, 99, 90
56, 60, 77, 90, 96, 97, 90, 90, 75, 82
61, 90, 60, 91, 53, 90, 71, 89, 76
|
Interval Kelas |
Batas Kelas |
Nilai Tengah |
Frekuensi |
|
9-21 22-34 35-47 48-60 61-73 74-86 87-99 |
8,5-21,5 21,5-34,5 34,5-47,5 47,5-60,5 60,5-73,5 73,5-86,5 86,5-99,5 |
15 28 41 54 67 80 93 |
3 4 4 8 12 23 6 |
|
Jumlah |
60 |
||