Homogeneity Test of Post-Test

45.71 6.76 d. Determine the Standard Deviation Score of Variable Y S y n2 S 769.23 19 40.48 6.36 e. Determine the Standard Error Mean of Variable X SEM SD n1 1 SEM 6.76 19 1 SEM 6.76 4.24 1.59 f. Determine the Standard Error Mean of Variable Y SEM 2 1 SEM 6.36 19 1 SEM 6.36 4.24 1.5 g. Determine the Standard Error of Different Mean of Variable X and Variable Y SEM SEM SEM SEM 1.59 1.5 2.52 2.25 2.18 h. Determine t t count 0.05 2.73 2.18 2.78 2.18 1.27 i. Determine the degree of freedom df d n1 n2 2 d 19 19 2 d 36 Table 4.8 The Result of Statistical Hypothesis of Gain’s Score of the Experimental Class and Controlled Class Statistics Experimental Class Controlled Class Mean 0.05 -2.73 Variance S 2 136.83 113.31 t count 1.27 t table 1.68 Conclusion The t count was smaller than t table , while the mean score of experimental gain score was greater than controlled gain score. From the calculation above, it showed that the mean score of experimental class was higher than the mean score of the controlled class, which was 0.05 - 2.73. In addition, the variance S 2 of the experimental class which reached 136.83 was also higher than the controlled class which gained 113.31. Next, to know more about the final hypothesis test result, it should be considered based on the criteria of hypothesis testing, which were mentioned; 1. If the result of t count is higher than t table in the significance degree 0.05, t t table, so H Null Hypothesis is rejected and H 1 Alternative Hypothesis is accepted. It means peer-assessment is effective on students’ writing of recount text. 2. If the result of t count is smaller than t table in the significance degree 0.05, t t table, so H Null Hypothesis is accepted and H 1 Alternative Hypothesis is rejected. It means peer-assessment is not effective on students’ writing of recount text for the tenth grade students of SMA N 11 Tangerang Selatan. The hypotheses of the study were proposed: H : Peer-assessment is not effective on student’ writing of recount text for the tenth grade students of SMA Negeri 11 Tangerang Selatan. H 1 : Peer-assessment is effective on student’ writing of recount text for the tenth grade students of SMA Negeri 11 Tangerang Selatan. In conclusion, since the value of t count was 1.27 and the value of t table in the degree of freedom 36 and the degree of significance 0.05 was 1.688, it meant t count t table or 1.27 1.688. Furthermore, the result of mean score of both classes indicated that the mean score of experimental class was lower than the mean score of the controlled class, which was 68.11 69.58. It can be concluded that H was accepted that peer-assessment is not effective on students’ writing of recount text.