Pre-test Normality test Post-test Normality Test

From the table 4.15, it presented that Sig. 2-tailed was 0.022. From the criteria above, if sig. 2-tailed of t-test 0.05, then 0.022 0.05, it meant that H 1 was accepted and H was rejected. Therefore, it could be concluded that there was a difference between students’ achievement in reading comprehension of narrative text between experimental class and control class. In order to get a more complete data, the writer also did a t-test that calculated the gained score posttest score – pretest score using Independent sample t-test. Table 4.16 T-test Result of Gained Score Independent Samples Test Levenes Test for Equality of Variances t-test for Equality of Means F Sig. T df Sig. 2- tailed Mean Difference Std. Error Difference 95 Confidence Interval of the Difference Lower Upper GAINED SCORE Equal variances assumed 10.20 1 .002 2.567 78 .012 5.175 2.016 1.162 9.188 Equal variances not assumed 2.567 60.618 .013 5.175 2.016 1.144 9.206 From the table 4.16, it presented that Sig. 2-tailed was 0.012. From the criteria above, if sig. 2-tailed of t-test 0.05, then 0.012 0.05, it meant that H 1 was accepted and H was rejected. Therefore, it could be concluded from the t-test calculation of gained score in experimental class and control class that there was also a difference between students’ achievement in reading comprehension of narrative text between experimental class and control class. The hypothesis in this study is: H : There is no effect of using Question Generation Strategy on the students’ reading comprehension of narrative text. H 1 : There is an effect of using Question Generation Strategy on the students’ reading comprehension of narrative text.

4 Effect Size Test

The researcher would calculate the effect size of the study to find a more extended result in a research, such as to find how well a strategy works in a research does. The researcher used Cohen’s d with the manual formula: Mean post test score of experiment group M1 = 85.10 Mean post test score of control group M2 = 81.70 Standard deviation post test score of exp group SD1 = 6.656 Standard deviation post test score of control group SD2 = 6.398 Before calculating the cohen’s d, firstly the researcher calculating the SDpooled. √ √ √ √ √ = 6.5 So, the SDpooled score was 6.5 The effect size score in this study was 0.52. Based on the criteria in chapter III, 0.52 score of effect size meant that it had a moderate effect. Therefore, the result of effect size test was that there was a moderate difference in students’