266 . IMPROVING THE ELEVENTH GRADE STUDENTS’ABILITY IN WRITING SIMPLE CAUSE EFFECT SENTENCES THROUGH FLOW CHART | Agustrianti | ELTS JOURNAL 3018 9265 1 PB

e-Journal of English Language Teaching Society ELTS Vol. 2 No. 1 2014 – ISSN 2331-1841 Page 8 Table 2: The Deviation and The Square Deviation of Pretest and Posttest of The Control Group No Name Pretest Y 1 Posttest Y 2 Y 2 -Y 1 Y 2 Raw score Standard score Raw score Standard score Y 1 AS 2 1 8 4 3 9 2 AD 6 3 7 3.5 0.5 0.25 3 LG 9 4.5 13 6.5 2 4 4 MF 6 3 10 5 2 4 5 MH 6 3 8 4 1 1 6 MN 8 4 10 5 1 1 7 SA 7 3.5 8 4 0.5 0.25 8 AA 4 2 9 4.5 2.5 6.25 9 AR 4 2 11 5.5 3.5 12.25 10 BS 10 5 9 4.5 -0.5 0.25 11 DG 3 1.5 12 6 4.5 20.25 12 DF 6 3 16 8 5 25 13 EK 5 2.5 14 7 4.5 20.25 14 IM 5 2.5 13 6.5 4 16 15 IF 7 3.5 9 4.5 1 1 16 NA 4 2 9 4.5 2.5 6.25 17 NB 6 3 12 6 3 9 18 MB 6 3 12 6 3 9 19 RA 7 3.5 10 5 1.5 2.25 20 SL 7 3.5 9 4.5 1 1 21 SG 8 4 11 5.5 1.5 2.25 22 YK 5 2.5 11 5.5 3 9 23 WW 7 3.5 11 5.5 2 2 24 WP 7 3.5 16 8 4.5 20.25 25 MA 8 4 8 4 Total 153

76.5 266

133 56.5 181.75 Next, the pretest in experimental group was conducted on November 11 th 2013. After getting the total standard score of the students, the students’ mean score of the experimental group in the pretest was computed. To gather the mean score, the sum of the students’ standard score 81.5 was divided by the total number of the students 27. In the result the mean score of the experimental group in pretest was 3.01. Then, the posttest in experimental group was conducted on December 3 rd 2013. By applying the same formula, the mean score of the experimental group in posttest was gathered. The sum of students’ standard score 191 was divided by the total number of the students 27. Therefore, the mean score of the experimental group in posttest was 7.07. e-Journal of English Language Teaching Society ELTS Vol. 2 No. 1 2014 – ISSN 2331-1841 Page 9 Furthermore, the deviation and the square deviation of the experimental group were calculated in this research. After getting the deviation and the square deviation of the experimental group, then the mean deviation of experimental group was computed. To gather the mean deviation of the experimental group, the sum of deviation score 109.5 was divided by the total number of the students 27. Thus, the mean deviation of experimental group was

4.05 .

After that, the sum of squared deviation in experimental group was calculated. After calculated the sum of squared deviation around the mean deviation score of the experimental group, it was found that the sum of squared deviation in experimental group was 11.17. The result of pretest standard score, posttest standard score, deviation, and the square deviation of experimental group was displayed in Table 3. e-Journal of English Language Teaching Society ELTS Vol. 2 No. 1 2014 – ISSN 2331-1841 Page 10 Table 3: The Deviation and The Square Deviation of Pretest and Posttest of The Experimental Group No Name Pretest X 1 Posttest X 2 X 2 -X 1 X 2 Raw score Standard score Raw score Standard Score X 1 AA 5 2.5 17 8.5 6 12 2 AG 10 5 17 8.5 3.5 12.25 3 AW 6 3 14 7 4 16 4 DZ 9 4.5 15 7.5 3 9 5 HS 8 4 17 8.5 4.5 20.25 6 IS 7 3.5 17 8.5 5 25 7 JA 3 1.5 12 6 4.5 20.25 8 KH 6 3 16 8 5 25 9 FA 4 2 12 6 4 16 10 FP 7 3.5 12 6 2.5 6.25 11 FS 2 1 15 7.5 6.5 42.25 12 MG 8 4 16 8 4 16 13 MI 8 4 15 7.5 3.5 12.25 14 MR 2 1 12 6 5 25 15 MA 10 5 16 8 3 9 16 NL 4 2 17 8.5 6.5 42.25 17 NS 5 2.5 8 4 1.5 2.25 18 RW 6 3 13 6.5 3.5 12.25 19 RD 9 4.5 17 8.5 4 16 20 RS 4 2 12 6 4 16 21 RA 4 2 12 6 4 16 22 RM 5 2.5 15 7.5 5 25 23 TF 7 3.5 13 6.5 3 9 24 YR 3 1.5 11 5.5 4 16 25 YM 6 3 12 6 3 9 26 YN 6 3 12 6 3 9 27 PN 9 4.5 17 8.5 4 16 Total 163

81.5 382