Page 39 - modul statistik dasar_Neat

Q
Letak 3 =
Nilai Q
3

2. Carilah Q 1 ,Q 2 ,dan Q dari data
3
Tabel 2.4 Distribusi nilai matematika 80 siswa SMA XYZ

Rentang nilai frekuensi N =
50-54 1 4
55-59 2 Kelas Q =
60-64 11 1
65-69 10 L =
1
70-74 12 d =
75-79 21
80-84 6  F =
85-89 9
90-94 4 f Q 1 =
95-99 4
Jumlah 80 Q =
1

PENYELESAIAN :

 N
2 = 40
4

 Kelas Q = 75 - 79
2
 L = 74,5
1
 d = 5
  F = 36

 f Q 2 = 21

 80 
 .2 4 36 
Q = 74,5 + 5   = 74,5 + 0,95 = 75,45
2
    21 



N
3 = 60
4

Kelas Q = 80-84
3
L = 79,5
1
d = 5 49

 F = 57

f Q 3 = 6