Tugas Statistik Pendidikan
Daya
Serap Dan Ketuntasan Siswa Kelas X 2
Data
80, 80, 60, 80, 60, 100, 80, 80, 80,
100, 100, 80, 60,40, 80, 80, 70, 80, 70, 80.
Data
Frekuensi
100 - 40 = 60
Banyak
Kelas (Interval)
K = 1 + (3,3 * log n)
= 1 + (3, 3 * log 20)
= 1 + (3,3 * 1, 3010)
= 1 + 4, 2933
= 5,2933
` = 6
Panjag
kelas
=
R/K
=60/6
=10
Ujung
Kelas Bawah
=
40
Perolehan
Nilai
|
Banyak
( Fi )
|
Xi
|
Fi
. Xi
|
40 -60
|
1
|
50
|
50
|
60-70
|
3
|
65
|
195
|
70-80
|
2
|
75
|
150
|
80-90
|
11
|
85
|
935
|
90-100
|
3
|
95
|
285
|
|
N
= 21
|
|
=
1615
|
X= 1615 / 21= 7,8.
TUGAS IV
Ø Data
80, 80, 60, 80, 60, 100, 80, 80, 80,
100, 100, 80, 60,40, 80, 80, 70, 80, 70, 80.
- Mengurutkan Data
40, 60, 60, 60, 70, 70, 80, 80,
80, 80, 80, 80, 80, 80, 80, 80, 80, 100, 100, 100.
·
Mean
= X1 + X2 +X3+......X20
20
= 40 + 60 + 60+..........100
= 68, 5
- Modus
= 80
- Median
X1 - X20 = 40 + 100
2
= 90
- R = NT – NR K = 1 + ( 3, 3 log n)
= 100 – 40 = 1 + ( 3,3 log 20)
= 60 = 1 + (3,3 . 1, 3010)
= 5, 2933 = 6.
- Ujung Bawah
=
40
- P = 60
6
= 10
Frekuensi
|
fi
|
xi
|
fi. xi
|
Fi
|
40 – 47
|
2
|
16
|
32
|
2
|
48 – 54
|
-
|
|
|
|
55 – 62
|
4
|
70
|
280
|
6
|
63 – 70
|
3
|
86
|
258
|
|
71 – 78
|
-
|
|
|
9
|
79 – 86
|
22
|
83
|
6889
|
31
|
87 - 94
|
-
|
|
|
|
95 - 100
|
4
|
125
|
500
|
35
|
- Modus
Mo
= Bbmo + P( b1 )
b1 +
b2
= 78, 5 + 10 ( 22 )
22 + 22
= 78, 5 + 10 ( 0,5)
= 78, 5 + 5
= 83, 5 = 9
- Median
=
Bbme + P ( n/2 – Fme )
Fme
=78,
5 + P ( 17, 5 – 0 )
0
=
78, 5 + 10 ( 0, 7954)
=
78, 5 + 7, 1586
=
86, 1454
=
9
Q1
= ¼ *21 D3 = 3/10 * 21 P10 = 10/100 * 21
= 5, 25 = 6,3 = 2,1
Q2
= 2/4 * 21 D5 = 5/10 * P15 = 15/100 * 21
= 4 =10, 5
= 3, 15
Q3
= ¾ * 21 D7 = 7/10 * 21 P20 = 20/100 * 21
= 15,75 = 10,5 = 42