tugas statistika ku
STATISTIKA
Tugas 1
SOAL:
Buatlah
data fiktif nilai ekonomi sebanyak 95 siswa nilai terendah 23 nilai tertinggi
98. Dari 95 data tersebut sajikan dalam :
(a)
Distribusi frekuensi
(b)
Distribusi frekuensi komulatif kurang dari dan lebih dari
(c) Distribusi
frekuensi relatif
(d)
Grafik: Histogram, Poligon dan Ogive.
PENYELASAIAN:
v
Data :
72
|
79
|
83
|
98
|
73
|
74
|
75
|
55
|
74
|
87
|
83
|
87
|
83
|
95
|
75
|
83
|
80
|
75
|
80
|
98
|
89
|
65
|
76
|
98
|
77
|
80
|
80
|
77
|
70
|
85
|
53
|
67
|
98
|
66
|
95
|
92
|
83
|
83
|
78
|
79
|
72
|
78
|
72
|
70
|
98
|
57
|
83
|
87
|
80
|
45
|
68
|
80
|
83
|
83
|
80
|
65
|
83
|
30
|
89
|
65
|
76
|
75
|
76
|
75
|
80
|
83
|
70
|
75
|
50
|
83
|
67
|
66
|
83
|
75
|
98
|
75
|
89
|
30
|
83
|
75
|
40
|
73
|
79
|
59
|
40
|
85
|
83
|
45
|
83
|
90
|
75
|
92
|
90
|
23
|
80
|
v
Array:
23
|
45
|
57
|
66
|
70
|
72
|
75
|
75
|
76
|
78
|
80
|
80
|
83
|
83
|
83
|
85
|
89
|
92
|
98
|
30
|
45
|
59
|
66
|
70
|
73
|
75
|
75
|
76
|
78
|
80
|
80
|
83
|
83
|
83
|
85
|
89
|
92
|
98
|
30
|
50
|
65
|
67
|
70
|
73
|
75
|
75
|
76
|
79
|
80
|
80
|
83
|
83
|
83
|
87
|
89
|
95
|
98
|
40
|
53
|
65
|
67
|
72
|
74
|
75
|
75
|
77
|
79
|
80
|
80
|
83
|
83
|
83
|
87
|
90
|
95
|
98
|
40
|
55
|
65
|
68
|
72
|
74
|
75
|
75
|
77
|
79
|
80
|
83
|
83
|
83
|
83
|
87
|
90
|
98
|
98
|
v
Menentukan
banyaknya kelas
·
K = 1 +
3,33 log n
K = 1 + 3,33 log 95
K = 1 + (3.33 x 1.97)
K = 1 + 6.56
K = 7.56 = 8 kelas
·
R = 98 –
23 = 75
·
I = R/K =
75/8 = pecahan
Maka disesuaikan : data
terkecil 23 menjadi 20, terbesar 98 menjadi 100.
Range penyesuaian Ã
100 – 20 = 80
·
Maka I =
80/8 = 10
NO
|
INTERVAL
|
TALLY
|
FREKUENSI
|
1
|
20 – 29
|
/ |
1
|
2
|
30 – 39
|
// |
2
|
3
|
40 – 49
|
//// |
4
|
4
|
50 – 59
|
///// |
5
|
5
|
60 – 69
|
///// /// |
8
|
6
|
70 – 79
|
///// ///// ///// ///// ///// ///// |
30
|
7
|
80 – 89
|
///// ///// ///// ///// ///// ///// /// |
33
|
8
|
90 – 99
|
///// ///// // |
12
|
|
|
Jumlah
|
95
|
a)
. distribusi frekuensi mutlak
NO
|
INTERVAL
|
FREKUENSI
|
1
|
20 – 29
|
1
|
2
|
30 – 39
|
2
|
3
|
40 – 49
|
4
|
4
|
50 – 59
|
5
|
5
|
60 – 69
|
8
|
6
|
70 – 79
|
30
|
7
|
80 – 89
|
33
|
8
|
90 – 99
|
12
|
|
|
95
|
b)
.Distribusi
frekuensi komulatif
Ø
DF.
Komulatif kurang dari <
NO
|
NILAI
|
FREKUENSI
|
FREKUENSI
KOMULATIF KURANG DARI
|
1
|
<
29
|
1
|
1
|
2
|
<
39
|
2
|
3
|
3
|
<
49
|
4
|
7
|
4
|
<
59
|
5
|
12
|
5
|
<
69
|
8
|
20
|
6
|
<
79
|
30
|
50
|
7
|
<
89
|
33
|
83
|
8
|
<
99
|
12
|
95
|
|
|
|
|
Ø
DF. Komulatif lebih dari >
NO
|
NILAI
|
FREKUENSI
|
FREKUENSI
KOMULATIF LEBIH DARI
|
1
|
20
>
|
1
|
95
|
2
|
30
>
|
2
|
94
|
3
|
40
>
|
4
|
92
|
4
|
50
>
|
5
|
88
|
5
|
60
>
|
8
|
83
|
6
|
70
>
|
30
|
75
|
7
|
80
>
|
33
|
45
|
8
|
90
>
|
12
|
12
|
|
|
95
|
|
c)
Distribusi frekuensi relatif
NO
|
INTERVAL
|
FREKUENSI
|
FREKUENSI
RELATIF %
|
1
|
20 – 29
|
1
|
1.06
|
2
|
30 – 39
|
2
|
2.10
|
3
|
40 – 49
|
4
|
4.24
|
4
|
50 – 59
|
5
|
5.30
|
5
|
60 – 69
|
8
|
8.50
|
6
|
70 – 79
|
30
|
31.6
|
7
|
80 – 89
|
33
|
34.6
|
8
|
90 – 99
|
12
|
12.6
|
|
|
|
100
|
d)
.Grafik
* tak bisa ditampilkan
Komentar
Posting Komentar