Research Finding

A. Research Finding

1. Data Description

This subtitle describes data that the students got in post-test. The researcher conducted a post test. The researcher conducted a post-test to determine the use of Comic Strip to students’ writing ability especially to the experimental class. While the control class the students were taught as they had usually been taught by their English teacher. Both of classes used the same material in post-test (Narrative text). The data of this research was based on students’ scores in post test. Post test was given for both of this group experimental group and control group.

The data were analyzed in order to examine hypothesis whether rejected or accepted. But, the researcher did test of normality and variance homogeneity of result study English writing class sample.

The post-test data of experimental and control classes were shown as follows:

Table 4.1

Students’ Score of Post-test of Experimental Class

COMPONENT OF WRITING

No of Writing Students

V LU

M Score

63 1512 Mean

Total 477

25.1 16.94 16.05 18.15 3.31 79.57 MIN

22 15 15 17 3 72 MAX

The table above is students’ post-test score of experimental class. It can be described as follows; there are 19 students at experimental class with the total of students’ score are 1512 and the average score is 79.57.

The higher score is 87 and the lower score is 72. Then look the content as one of component of writing, it total score is 477 with mean score is 25.1, while the maximum score 27 and minimum score is 22. Next is organization, it totals score is 322 with the average score of organization is 16.94, while the maximum score 19 and minimum score is 15. The next description of writing component is vocabulary, Not far from previous score vocabulary has the average score is 16.05 and the total score is 305 while the higher score that students got is 17 and the lower score is 15. It continues by language use description, it has 18.15 as the average score with total score is 345 and the higher score is 20 while 17 is the lower score. As a part of writing component, mechanics has 4 as the higher score with total score is 3.31 and 3 as the lower score. Then the total score of mechanic is 63.

Table 4.2 Students’ Score of Post-Test of Control Class

COMPONENT OF WRITING

No of Writing Students

V LU

M Score

72 1709 Mean

Total 564

23.5 15.04 14.33 15.29 3 71.2 MIN

21 12 12 12 3 82 MAX

The table above is students’ post-test score of control class. It can

be described as follows; there are 24 students at experimental class with the total of students’ score is 1709 and the average score is 71.2. The higher score is 82 and the lower score is 60. Then look the content as one of component of writing, it total score is 564 with mean score is 23.5, while the maximum score 25 and minimum score is 21. Next is organization, it total score is 361 with the average score of organization is 15.04, while the maximum score 17 and minimum score is 12. The next description of writing componenet is vocabulary, Not far from previous score vocabulary has the average score is 14.33 and the total score is 344 while the higher score that students got is 12 and the lower score is 16. It continues by language use description, it has 15.29 as the average score with total score is 367 and the higher score is 19 while 12 is the lower score. As a part of writing component, mechanics has 3 as the higher score with total score is 3 and 3 as the lower score. Then the total score of mechanic is 72.

As the comparison, researcher put the table’ score of experimental class and control class as

Table 4.3 The Calculation of Comparison of Mean Score Post-Test between Control and Experimental Class in Term of Content, Organization, Vocabulary, Language Use, Mechanic

No Aspect

4 Language Use

From the table above can be explained that:

1) Content

The table above explained that the students’ mastery in developing the ideas improved after using comic strip. The use of comic strip encouraged students’ thinking and imagination.

In experimental group, the mean score of the students’ content was got 25.01 while in control group got 23.05. It was concluded that

experimental group had increased in content than that control with difference 1, 06.

2) Organization

The data in the table above also indicated the success of students’ in organizing the ideas after using comic strip. This strategy improved their competence in expressing their ideas fluently in writing.

The table also showed that the mean score of post-test in experiment class and post-test control class. Then, in experimental group, The table also showed that the mean score of post-test in experiment class and post-test control class. Then, in experimental group,

3) Vocabulary

The effect of comic strip could enlarge the students’ mastery in vocabulary. It indicated in the table above that the mean score of post test increased after using comic strip. In experimental group, the mean score of

the students’ vocabulary was got 16.05 while in control group got 14.03. It was concluded that experimental group had increased in vocabulary than

that control with difference 1.72

4) Language Use

Next, the table above showed that the use of comic strip improved students’ writing especially in using language use appropriately. Students

could use tenses and ordering the words properly. In experimental group, the mean score of the students’ language

use was got 18.15 while in control group got 15.29. It was concluded that experimental group had increased in language use than that control group with difference 2.86.

5) Mechanic

The previous table showed the improvement of students’ mechanics in writing. Their comprehension in using punctuations,

spelling, capitalizations and paragraphing developed after using comic strip.

In experimental group, the mean s core of the students’ language use was got 3.11 while in control group got 3. It was concluded that experimental group had increased in mechanic than that control group with difference 3.

2. Descriptive Data Analysis

The data will be analyzed by using t - test formula. The calculation of t-test between mean score of post test of experimental class and control class is as follow; Besides that, the students’ interval score in experiment class can be seen from the table below

a. Students’ Writing Score of Post-Test of Experimental Class

After giving the treatment in several times, the students got post- test, the result is going to be presented by the data of students’ writing scores of post-test in experimental class could be seen in the following table:

Table 4.4

Mean Score of Post-test of Experiment Class (VIII.2) Num. of

Aspects

Score Students

V LU

Based on the table above, it was found that the students’ score of experiment class were got 25.1 for content, 16.94 for organization, 16.05

for vocabulary, 18,15 for language use, and 3,31 for mechanic, with the total mean score was 79.58.

Based on data which was gathered from 19 students specified by as sample, data of students’ achievement on writing ability will be tabulated

as follow. Before going to the tabulating, we had to find those intervals.

r  H  L +1 L = 72

H = 87

n = 19

i= Interval r= Range; (the difference of higher score and lower score) +1 r = 87- 72 +1 = 16 k = 1+3,3. Log n = 1+ 3,3 . Log 19 = 1+ 3,3. 1.27 = 1+ 4.21 = 5.21

i = r/k = 16 / 5.21

= 3.07 =3 So, the interval of students writing score is 3 Then, the stu dents’ score of test in experimental class can be seen in the

table below:

Table 4.5 The Interval Data of Post-test Score of Experimental Class

Interval No (Students’ Writing Scores) Frequency Percentages

From the table above, it was found that most of students’ writing scores of post test in the experimental class about: 87-89, there were 1 (5.26 %) students got score at that interval. Next, there was 2 (10.52 %) students got the score at the interval 84-86. Then, there were 4 (21.05%) students got score at the interval 81-83, there were 8 (42.10%) students got score at the interval 78-80, in interval 75 -77 there were 1 student (5.26%). The last there were 3 (15.78%) students got score at the interval 72 – 74. The data of post-test scores of experiment class could be drawn as follows

Graph 1 The Interval Data of Experimental class (VIII.2)

72 - 74 72 - 74

Table 4.6 Mean Score of Post-test of Control Class (VIII.1)

Num. of

Aspects

Score Students

V LU

Based on the table above, it was found that the students’ score of control class were got 23.5 for content, 15.04 for organization, 14.33 for

vocabulary, 15.29 for language use, and 3 for mechanic, with the total mean score was 71.2.

Based on data which was gathered from 24 students specified by as sample, data of students’ achievement on writing ability will be tabulated

as follow. Before going to the tabulating, we had to find those intervals.

r  H  L +1 L = 72

H = 87

n = 19

i= Interval r= Range; (the difference of higher score and lower score) +1

r = 82 - 60 + 1 = 23 k = 1+3,3. Log n = 1+ 3,3 . Log 24 = 1+ 3,3. 1, 38 = 1+ 4, 55 = 5.5

i = r/k = 23 / 5.5 = 4

So, the interval of students writing score is 4. T he students’ interval score in control class can be seen from the table below:

Table 4.7 The Interval Data of Post-test Score of Control Class

Interval (Students’ Writing No

Scores)

Frequency Percentages

From the table above, it was found that most of students’ writing scores of post test in the control class about: 72-75, there were 10 students got score at that interval, and while the interval 80-83 there were 2 students got the score at that interval. 3 students got score at the interval 60-63. Also 3 students got score at the interval 64-67, and 4 students got score at the interval 68 -71. The last 2 students got score at the interval 76 -89.

The interval data of experimental class score of subject the study above could be draw as below:

Graph 2 The Interval Data of Control Class (VIII.1)

c. The Normality and Homogeneity of Distribution Test

1) Normality test

Normality test had an objective to know the population normal or not. In this research, to do the normality test the researcher used Kolmogrov Smirnov and Shapiro Wilk. test was performed in SPSS

20.0. The result of K-S test indicated that the data were normally distributed. Moreover, significance score of the experimental class was

D (19) = 0.200, p > 0.05 and the control class was D 24) = 0.200, p >

Table 4.8 Tests of Normality

Kolmogorov-

Smirnov a Shapiro-Wilk VAR00002

Statistic df Sig. Statistic df Sig. VAR000 Experimental

01 Class Control Class * .134 24 .200 .960 24 .437

a. Lilliefors Significance Correction *. This is a lower bound of the true

significance.

It was revealed that the distribution was normal. The numbers in bracket are the degrees of freedom (df) from the table. The table of the normal distribution test result can be seen clearly at the appendix. If the data around and near with the curve line, it means the data was normal.

2) The homogeneity of variance test

To check the homogeneity of variance of the data, Levene’s test was conducted. The result of calculating using Levene test are as follows:

Table 4.9 Test of Homogeneity of Variance

Levene Statistic

df2 Sig. VAR0000 Based on Mean

1 Based on Median

1 41 .151 Based on Median and

1 37.460 .151 with adjusted df

Based on trimmed mean

The table shows that the significance value (based on mean) is 0.104. It means that the probability is higher than 0.05 (p >0.05). Therefore, the result of the test indicated that the students’ test scores in both classes were equal. The table of the homogeneity of variance test result can be seen clearly at the appendix.

d. Analysis of Students’ Writing Score

After analyzing the data such presented in the previous table, the researcher did the process of testing using t- test . The calculation of t-test between mean score of post test of experimental class and control class is as follow:

Table 4.10 Calculation Process of Mean and Standard Deviation of Experimental Class

2 Score (X 2

 F 1  1512 =79.57

19

2 (ΣF 2

1 X 1 ) =  1512  = 2286144

19.120694 - 2286144 S 1 

n 1 (n 1  1)

19  19  1 

2293186 - 2286144 =

342

7042 =

= 20.59 342

20.59 = 4.5

Table 4.11 Calculation Process of Mean and Standard Deviation of

Control Class

2 Score (X 2

 F 1 X 1 X 1709

F 1 24

1 X 1 ) =  1709  = 2920681

2 (ΣF 2

2 n 1  F 1 x 1  (  F 1 X 1 ) 24.122569 - 2920681

n 1 (n 1  1)

2941656 - 2920681 =

Then it was done hypothesis testing with test t. The formula which was used was stated by Sudjana (2005: 239).

t=

Before it we looked for standard deviation with statisctic equation, Based on Sudjana (2005: 221) Hypothesis testing will get to the conclusion to accept or rejected the hypothesis.

In order to see whether the hypothesis accepted or rejected, the researcher analyzed with using T-test. The calculation can be seen follow: 2 X

1 = 79.57 n = 19 1 S = 4.53 1

n 2 = 24

S = 6.16 2

X 1 : Mean of gain score of experimental class

X 2 : Mean of gain score of control class

2 S : Standard deviation of gain score of experimental class

2 S : Standard deviation of gain score of control class

n 1 : The number of subject of experimental group n 2 : The number of subject of control group

= (19-1) 4.53 + (24-1) 6.16

41 = 5.44 S= 5.44 S = 2.33

df   n 1  n 2  2 

= 41 T-table = t (1-  ) df

= t (1- 0.05) 41 = t (0.95) 41 - Table = 2.019 t- Calculate = 4.804 t- Calculate > t- table

The data was analyzed by using simple regression for hypothesis with 5% (= 0, 05) of significance level and the value of t-table of the level of freedom 41. The value t-obtained (4.804) was bigger than the value of t- table (1.682), so, the hypothesis that comic strip strategy gave significant effect on students’ writing ability was accepted.

Furthermore, to see the comparison result of post-test between experimental class and control class could be seen in the table below

Table 4.12

The Comparison Result of Post-test Score of Experimental Class (VIII.2) and

Control Class (VIII.1)

Total Class

score Experiment

al Control

Graph 3

The Comparison Result of Post-test Score of Experimental Class (VIII.2) and Control Class (VIII.1)

Highest Lowest Score

Table 4.13 SPSS Report

The Comparison Result of Post-test Score of Experimental Class (VIII.2) and Control Class (VIII.1)

Std. Deviati

Sum Experiment

Class Mean

on Maximum Minimum

Based on the table above, it could be seen that the differences of post-test scores between experimental class and control class. The total score of experiment class was 1512, the mean score was 79.57, the highest score was 87, the lowest score was 72, and SD was 4.53.

On the contrary, the total score of control class was 1709, the mean score was 71.21, the highest score was 82, the lowest score was 60, and SD was 6, 61.