The Result of Interview The Analysis of the Try Out

CHAPTER 4. RESEARCH RESULT AND DISCUSSION

This chapter presents the results of interview, the result of documentation, the result of homogeneity test, the description of the treatment, the analysis of the try out, the hypothesis verification, the computation of DRE and discussion. The schedule of administering the research could be seen in Table 4.1 below: Table 4.1 the Schedule of Administering the Research No Activities Date in the year of 2011 1. Homogeneity Test 7 th May 2. The Analysis of Homogeneity Test 8 th May 3. Try Out 10 th May 4. The Analysis of Try Out Score 10 th, 11 th May 5. Treatment to the experimental group 12 th , 13 th May 8. Activity to the control group 13 th , 14 th May 9. Post test 20 th May 10. Analysis of the Post Test 21 th , 22 st May

4.1 The Result of Interview

The interview was conducted informally with the seventh grade English teacher of SMPN 1 Sumberjambe on February 4 th 2011. According to her, English is taught twice a week, and the curriculum used is Institutional Based Curriculum KTSP 2006. She taught vocabulary achievement by using Question-Answer method. In applying Question-Answer method, she gave the model by reading the text aloud in front of the class and then she asked some students to read the text. After that, she asked the students to find some difficulty words. Then, she asked the students to find the meaning on the dictionary. After that, she asked the students to do the exercises given based on the text. He never used Visual Dictionary in teaching vocabulary achievement. The respondents of the research were the seventh grade students of SMPN 1 Sumberjambe in the 20102011 academic year consisting of four classes VII A, VII B, VII C, VII D. The results of homogeneity test were analyzed statistically by using ANOVA formula Appendix J. Based on the calculation, the result of statistical computation was 0, 42 while the value of F-table in 5 significant level was 2, 60. From the calculation above, it was known that F-computation was lower than that of F-table. It means that there was no significant difference of mean of the four classes. In other words, the population was homogenous. Therefore, the samples could be taken randomly from any classes of the population. The lottery was done directly after knowing the result of the homogeneity test to determine the experimental group and the control group from the population. Based on the lottery, two classes were chosen, VII A as the experimental group and VII C as the control group.

4.4 The Analysis of the Try Out

The analysis of the try out was important to know whether or not the research instrument, especially the test was valid and reliable or not. The analysis was focused on establishing test validity and finding out the difficulty index and the reliability coefficient. 4.4.1 The Analysis of the Test Validity Regarding the validity of the test, this research established content validity since it had been arranged based on the material stated in the Institutional Based Curriculum and the syllabus of the teaching English used in SMPN 1 Sumberjambe. The researcher had also already checked and consulted the material to the English teacher and both of the consultants. For this reason, the test could be said to fulfil the requirement of content validity. 6690 1680 2094 × = xy r 11239200 2094 = xy r 3352.492 2094 = xy r r xy = 0,62 Notes: r xy : The correlation coefficient of product moment N : The total number of participants ∑XY : The total number of odd items and even items ∑X : The total number of odd items ∑Y : The total number of even items From the calculation, it was found that the reliability coefficient of a half test was 0, 62. In order to find the reliability of the whole test, the following calculation was done. xy xy r r r + = 1 2 11 62 . 1 62 . 2 11 + × = r 62 , 1 24 , 1 11 = r 76 . 11 = r Notes: r 11 : The reliability coefficient for the whole test items r xy : The correlation coefficient of product moment From the calculation above, reliability coefficient of the whole test was 0, 76. Based on Djiwandono 1996:154 the reliability coefficient of the whole items that first meeting, the total items of the exercises was 20, in the second meeting was 20 items.

4.6 The Result of the Post Test