46 5 = Strongly Agree
The questions in these questionnaires were intended to answer the research problem or provide the data needed by the researcher.
4.1.5. The Correlation between the Self-Management Ability and Students’
Ability on Writing an Argumentative Essay in CRW II Class
After analyzing the data from the degrees of self-management ability and the students’ ability, the researcher found a positive correlation. The result of the
finding in this research was shown in the graphic 4.3. Graphic 4.3 visualizes the relationship between the degrees of self-
management ability and the students’ ability in CRW II Class which was analyzed by using the students’ argumentative essay scores. The dots were plotted within
the graph presenting the positive relationship between these two variables. The researcher calculated and found that there was a significant correlation between
the self- management ability and students’ ability on writing an argumentative
essay. These strong positive correlation coefficients would be presented in this research.
47
Graphic 4.3 The Scatterplot of the Degrees of Self-Management Ability and Students’ Ability on Writing an Argumentative Essay in CRW II Class
4.2. Data Analysis
The correlation between the degrees of self-management ability and the students’ ability on writing an argumentative essay in CRW II class was tested
and concluded. The researcher analyzed the data from APPENDIX 4 by using software SPSS v.16 and the percentage and also the frequency of the data were
documented. The Pearson correlation coefficient was used as the statistic method to calculate the data of this research. It was chosen because the researcher wanted
to know the relationship between two variables. There were two variables used in order to find out that relationship. There were dependent and independent
variables. The dependent variable was the students’ argumentative essay scores that might be affected by the independent variable, which was the degree of the
48 students’ self-management ability. The Pearson correlation coefficient was used to
determine where the significance existed. Moreover, the correlation coefficient was also calculated. The significant level was set at 0.05 for the analysis of the
data. The result must be tested in order to decide whether the correlation
between two variables was significant or not. The result was explained in the following statements:
1. Statistic of the null hypothesis and alternative hypothesis
H
o
: r
s
= 0 There is no correlation between two variables H
o
: r
s
≠ 0 There is a significant correlation between two variables 2.
Determining the level significance α. The research used the critical value of 0.05.
The relationship between the self-management ability and students’ ability
on writing an argumentative essay in CRW class batch 2014 in this study was tested and the result was given in the table 4.5.
According to the result of the data analysis in the table 4.5, there was a strong positive relationship between the self-
management ability and students’
ability on writing an argumentative essay in CRW class r = .794, df : 58. The
correlation in this research found that it was a significant relationship p.05. The degree of freedom df in this research was two n - 2 because there were two
variables used in this research. Therefore, there was statistical evidence to reject the null hypothesis. The evidence indicated that there was a significant strong
correlation between self- management ability and students’ ability on writing an
