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THE USE OF DESCRIBING PICTURE STRATEGY T
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DP 31 38 13 SI 27 32 14 MZ 23 29 15 AA 31 38 16 SR 27 29 17 YF 26 31 18 AR 24 29 19 JR 28 33 20 MY 28 33 21 BG 26 30 49 Table 4.1 is pre-test and post- test score from 21 students‟ English speaking skill based on the speaking rubric of Brown (2004). The table indicates that the lowest score of pre-test is 23 and the highest score is 36. In post-test, the lowest score is 29 and the highest score is 45. 1. Pre-Test In analyzing the data of pre-test, the writer calculated the score to find out Range (R), Class Number (CN), Interval (I), and Mean (X) by using statistical formula, which are: a. Range is the different of the highest score with the lowest score. To find the result, the writer used the following formula: R= H-L Notes: R : Range of the score H : Highest score L : Lowest score Based on the table 4.1, it can be seen that the highest score of pre-test is 36 and the lowest score is 23. Thus, the range is: R = 36-23 = 13 b. Class Number is the number of score that has been grouped based on the expected interval, and the formula is: CN= 1+3.3 log n (total sample) CN = 1+ (3.3) log 21 = 5.3626 (it can be taken 5) 50 c. Interval is amount of class and to find the score, the writer used the following formula: Remarks: I= interval R= range CN= class number I = = 2.6 (it can be taken 3) d. Table of frequency The frequency distribution can be calculated as the following table: Download 2.02 Mb. Do'stlaringiz bilan baham: |
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