Appendix 3
Pre-test Results of Control Class Pre-test results of Control Class is as follows
:
30 40
25 20
40 15
30 25
20 30
25 25
20 30
25 35
30 30
30 15
20 25
25 40
15 30
20 30
30 40
20 30
From there it is obtained that the maximum val X
max
is 40 and minimum value
X
min
is 15. So that it can be made of a frequency distribution table after
first determining the value range R,
the number of classes K,
and length class P.
Three values obtained based on the following calculation.
a. Range R
25 15
40
min
X
X R
mx
b. T 0 he number of classes
K
6 92
, 5
92 ,
4 1
49 ,
1 3
, 3
1 31
log 3
, 3
1 log
3 ,
3 1
n
K
So the number of classes is 6
c. Length class
P
5 16
, 4
6 25
K R
P
So that the length class is 5
Distribution table is as follows :
Class Class
Limit
Middle Class
Values x
i
Frekuensi f
i
f
i
. x
i
f
i
. x
i 2
15 -
19 14.5
17 3
51 867
20 -
24 19.5
22 6
132 2904
25 -
29 24.5
27 7
189 5103
30 -
34 29.5
32 10
320 10240
35 -
39 34.5
37 1
37 1369
40 -
44 39.5
42 4
168 7056
Jumlah ∑ 162
177 31
897 27539
Based on the frequency distribution table, it can be determined average value
X
, median Me, mode Mo, and standard deviation S value of this pre- test. Here is a calculation to determine those values.
93 ,
28 31
897
i i
i
f x
f X
a. Median Me
The median value is determined by the following statistical formula
f
F n
P b
Me 2
1
Where : b =
lower limit of the class median = 29,5
P = length class
= 5 n =
number of data = 31
F = value of cumulative frequency before the class median
= 3 + 6 + 7 = 16 f =
frequency of median class value = 10
Based on these data, the median value can be determined from the results of this pre-test are as follows.
25 ,
29 25
, 5
, 29
05 ,
5 5
, 29
10 16
31 .
2 1
5 5
, 29
Me
b. Modus Mo
Mode value is determined using the following statistical formula
2 1
1
b b
b P
b Mo
Where : b =
lower limit of the class median = 29,5
P = length class
= 5 b
1
= class frequency mode frequency is reduced
previous class = 10
– 7 = 3 b
2
= class frequency mode frequency is reduced
subsequent class = 10
– 1 = 9
Based on these data, it can be determined from the pre test value of this mode is as follows.
75 ,
30 25
, 1
5 ,
29 25
, 5
5 ,
29 9
3 3
5 5
, 29
Mo
c. Standard Deviation S
Standard deviation value determined with the following statistical formula
27 ,
7 79
, 52
30 87
, 1583
30 13
, 25955
27539 30
31 804609
27539 1
31 31
897 27539
1 .
.
2 2
2
i i
i i
i i
f f
x f
x f
S
i
Appendix 4
Post-test result of Experimental Class Post-test results of Experimental Class is as follows
.
45 50
60 55
40 65
70 70
55 55
55 60
50 60
40 55
70 50
60 70
70 70
65 55
60 75
55 55
50 65
55 65
Baesd on the table, it is obtained that the maximum value X
max
is 75 and minimum value X
min
is 40. So that it can be made of a frequency distribution
table after first determining the value range R,
the number of classes K, and
length class P. Nilai ketiganya diperoleh berdasarkan perhitungan berikut ini.
a. Range R
35 40
75
min
X
X R
mx
b. The number of classes
