Tabel distribusi Frekuensi NHT No.
Interval Batas
Bawah Batas
Atas Frekuensi
Titik Tengah
x
i
x
i 2
f
i
x
i
f
i
x
i 2
f
i
fi f
k
1 63 - 67
62.5 67.5
3 8.82
3 65
4225 195.00
12675.00 2
68 - 72 67.5
72.5 5
14.71 8
70 4900
350.00 24500.00
3 73 - 77
72.5 77.5
6 17.65
14 75
5625 450.00
33750.00 4
78 - 82 77.5
82.5 9
26.47 23
80 6400
720.00 57600.00
5 83 - 87
82.5 87.5
5 14.71
28 85
7225 425.00
36125.00 6
88 - 92 87.5
92.5 4
11.76 32
90 8100
360.00 32400.00
7 93 - 97
92.5 97.5
2 5.88
34 95
9025 190.00
18050.00
Jumlah 34
100.00 2690.00 215100.00
Rata-rata 79.12
Median 78.50
Modus 76.50
Varians s
2
58.30 Simpangan Baku
s 7.64
A. Perhitungan Mean
¯ x = =
= 79,1 B.
Perhitungan Median
M
e
= B
b
+P
=76,5+5 =
76,5 + 2,0 = 78,5
C. Perhitungan modus
M
o
= B
b
+P =76,5+ 5
= 76,5 + 2,14 = 76,5
D. Perhitungan varians
S2 = =
= = 58,3
E. perhitungan simpangan baku
s = = 7,63
Distribusi frekuensi post test kelas TGT Konsep sistem sirkulasi
No Nama
Nilai
1 E1
93 2
E2 93
3 E3
78 4
E4 88
5 E5
75 6
E6 75
7 E7
95 8
E8 85
9 E9
78 10
E10 88
11 E11
83 12
E12 78
13 E13
75 14
E14 75
15 E15
78 16
E16 88
17 E17
70
No Nama
Nilai
18 E18
80 19
E19 80
20 E20
85 21
E21 88
22 E22
93 23
E23 83
24 E24
73 25
E25 90
26 E26
80 27
E27 95
28 E28
85 29
E29 88
30 E30
85 31
E31 78
32 E32
88 33
E33 78
34 E34
83
Banyak data n = 34 Perhitungan rentang
R = X maks – X min
= 95 - 70 = 25
Perhitungan banyak kelas K = 1 + 3,3 log n
= 1 + 3,3 log 34 = 1 + 3,3 5,04
= 6,04 = 6
Perhitungan Panjang kelas P =
P = = 4,16
= 4
Tabel distribusi Frekuensi TGT No. Interval
Batas Bawah
Batas Atas
Frekuensi Titik
Tengah x
i
x
i 2
f
i
x
i
f
i
x
i 2
f
i
fi f
k
1 70 - 73
69.5 73.5
2 5.88
2 71.5
5112.25 143.00
10224.50 2
74 - 77 73.5
77.5 4
11.76 6
75.5 5700.25
302.00 22801.00
3 78 - 81
77.5 81.5
8 23.53
14 79.5
6320.25 636.00
50562.00 4
82 - 85 81.5
85.5 7
20.59 21
83.5 6972.25
584.50 48805.75
5 86 - 89
85.5 89.5
7 20.59
28 87.5
7656.25 612.50
53593.75 6
90 - 93 89.5
93.5 4
11.76 32
91.5 8372.25
366.00 33489.00
7 94 - 97
93.5 97.5
2 5.88
34 95.5
9120.25 191.00
18240.50
Jumlah 34
100.00 2835.00 237716.50
Rata-rata 83.38
Median 82.17
Modus 83.90
Varians s
2
34.04 Simpangan Baku
s 5.83
A. Perhitungan Mean
¯ x = =
= 83,38 B.
Perhitungan Median
M
e
= B
b
+P
=77,5+ 4 = 77,5 + 5,5
= 82,17
