Students Y
Pre-test Post-test
9 70
70 10
55 60
11 30
60 12
50 60
13 40
55 14
65 65
15 65
65 16
60 65
17 50
65 18
75 70
19 50
75 20
60 65
21 55
70 22
70 70
23 65
70 24
50 65
25 55
60 26
80 80
27 60
65 28
65 70
29 60
60 30
60 60
31 75
75 32
50 80
33 70
70
Students Y
Pre-test Post-test
34 45
55 35
50 45
Table 4.2 showed the lowest and the highest score from 35 students in the control class. The lowest score in the pre-test was 30 and the highest score was 80.
The data showed in post-test that the lowest score was 45 and the highest score was 80.
2. The Analysis of the Data
a. Results of Pre-test of Experimental Class and Control Class
The result of pretest of experimental class and control class based on SPSS v.16 for windows program was gained from the steps as follows: Analyze
– description statistic
– frequencies statistic. Results gained from a pre-test in class XI IPA 2 as an experimental class of this research are presented in a table below:
Table 4.3 Table of Data Description of Pre-test Result of Experimental Class
N Valid
35 Missing
Mean 59.28
Median 60.00
Mode 55.00
Std. Deviation 1.356
Variance 184.0
Range 50.00
Minimum 30.00
Maximum 80.00
Sum 2075
The table above shows that the dataof the experimental class is 35 students. The total of all data which is divided with the number of data determined as mean
score from the experimental class is 59.28. Median score is 60.00. The median is the numerical value separating the higher half of a data sample, a population, or a
probability distribution, from the lower half.The mode is defined as the element that appears most frequently in a given set of elements. The mode score from the table is
55.00. The set of scores constitute a population determined as variance score is 184.0, and deviation standard is 1.356. Deviation standard is a quantity calculated to indicate
the extent of deviation for a group as a whole. The highest score of the experimental class is 80.00 and the lowest score is 30.00. The sum gained from the total scores is
2075. According to the table above, it can be made a table of frequency distribution
which is presented as follows:
Table 4.4 Table of Frequency Distribution of Pre-test Result of Experimental Class
Score
Frequency Percent
30 1
2.9 35
2 5.7
40 2
5.7 45
2 5.7
50 2
5.7 55
6 17.1
60 5
14.3 65
5 14.3
70 3
8.6 75
4 11.4
80 3
8.6 Total
35 100.0
The table above is a tool of presentation consisting of columns and rows and there are numbers which describe the division and the percentage of frequency
distribution. Beside the table of frequency distribution, it also can be describe by a diagram
which is presented as follows:
Picture 4.1 Diagram of Pre-test Result of Experimental Class
Results gained from a pre-test in class XI IPA 1 as a control class of this research are presented in a table below:
Table 4.5 Table of Data Description of Pre-test Result of Control Class
N Valid
35 Missing
Mean 58.14
Median 60.00
Mode 50.00
1 2
3 4
5 6
30 35
40 45
50 55
60 65
70 75
80
N Valid Missing
Std. Deviation 35
1.112 Variance
123.6 Range
50.00 Minimum
30.00 Maximum
80.00 Sum
2035
The table above shows that the data of the control class is 35 with sum 2035. Mean score from the control class is 58.14, the variance score is 123.6, and deviation
standard is 1.112. The highest score of the control class is 80.00 and the lowest score is 30.00. The median score is 60.00 and the mode score is 50.00
The table of frequency distribution from the data above is presented as follows:
Table 4.6 Table of Frequency Distribution of Pre-test Result of Control Class
Score
Frequency Percent
30 1
2.9 40
2 5.7
45 2
5.7 50
7 20.0
55 3
8.6 60
7 20.0
65 6
17.1 70
4 11.4
75 2
5.7 80
1 2.9
Total 35
100.0
