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Table 8. The Frequency Distribution of the Post-test Scores of the Experimental Group Having Low Learning Motivation A
1
B
2
.
No. Interval Class
Absolute Frequency Relative Frequency
1.
34-36 3
20.00
2.
37-39 2
13.33
3.
40-42 4
26.67
4.
43-45 3
20.00
5.
46-48 3
20.00
Total 30
100.00
1 2
3 4
5
34-36 37-39
40-42 43-45
46-48 Reading Comprehension
Frequenc y
Figure 3. The Histogram and Polygon of the Frequency Distribution of the Post- test Scores of the Experimental Group Having Low Learning
Motivation A
1
B
2
.
2. Control Group A
2
In the control group A
2
, the highest score is 51 and the lowest score is 34. The mean of the score is 43.3, the mode is 45.9, the median is 44.90, and the
standard deviation is 4.29. Table 8 is the frequency distribution of posttest scores of control group while Figure 4 is the histogram and the polygon of the frequency
distribution.
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Table 9. The Frequency Distribution of the Post-test Scores of the Control Group A
2
.
No. Interval Class
Absolute Frequency Relative Frequency
1.
34-36 3
10.00
2.
37-39 3
10.00
3.
40-42 5
16.67
4.
43-45 8
26.67
5.
46-48 9
30.00
6.
49-51 2
6.67
Total 30
100.00
2 4
6 8
10
34-36 37-39
40-42 43-45
46-48 49-51
Reading Comprehension Frequenc
y
Figure 4. The Histogram and Polygon of the Frequency Distribution of the Post- test Scores of the Control Group A
2
.
a. The scores of the students who are taught using textbook material who have
high learning motivation A
2
B
1
. The number of respondents of this cell is 15. The highest score is 48 and the
lowest score is 34. The mean of the score is 41.2, the mode is 44.5, the median is 41.38, and the standard deviation is 4.31. Table 9 is the frequency
distribution of the posttest scores of the control group having high learning
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motivation while Figure 5 is the histogram and polygon of the frequency distribution of this group.
Table 10. The Frequency Distribution of the Post-test Scores of the Control Group Having High Learning Motivation A
2
B
1
.
No. Interval Class
Absolute Frequency Relative Frequency
1. 30-33
1 6.67
2.
34-37 2
13.33
3. 38-41
5 33.33
4. 42-45
4 26.67
5. 46-49
3 20.00
Total 30
100.00
1 2
3 4
5 6
30-33 34-37
38-41 42-45
46-49 Reading Comprehension
Frequenc y
Figure 5. The Histogram and Polygon of the Frequency Distribution of the Post- test Scores of the Control Group Having High Learning Motivation
A
2
B
1
.
b. The scores of the students who are taught using textbook material who have
low learning motivation A
2
B
2
. From the data, it is resulted that the number of respondent is 15. The highest
score is 51 and the lowest score is 38. The mean of the score is 45.2, the mode
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is 45.3, the median is 45.25, and the standard deviation is 3.1. The frequency distribution of this group can be seen on Table 10 and the histogram and
polygon of the frequency distribution can be seen on Figure 6.
Table 11. The Frequency Distribution of the Post-test Scores of the Control Group Having Low Learning Motivation A
2
B
2
.
No. Interval Class
Absolute Frequency Relative Frequency
1. 38-40
