Technique of Data Analysis

34 No Students Number of Correct Answer Number of Incorrect Answer Score 13 Student 13 22 28 4.40 14 Student 14 19 31 3.80 15 Student 15 21 29 4.20 16 Student 16 9 41 1.80 17 Student 17 14 36 2.80 18 Student 18 21 29 4.40 19 Student 19 11 39 2.20 20 Student 20 13 37 2.60 21 Student 21 18 32 3.60 22 Student 22 10 40 2.00 23 Student 23 17 33 3.40 24 Student 24 13 37 2.60 25 Student 25 18 32 3.60 26 Student 26 14 36 2.80 27 Student 27 19 31 3.80 28 Student 28 8 42 1.60 29 Student 29 6 44 1.20 30 Student 30 22 28 4.40 31 Student 31 20 30 4.00 32 Student 32 29 21 5.80 33 Student 33 28 22 5.60 35 Table 4.2 The Students Score of English Summative Test Type P2 No Students Number of Correct Answer Number of Incorrect Answer Score 1 Student 1 14 36 2.80 2 Student 2 15 35 3.00 3 Student 3 19 31 3.80 4 Student 4 16 34 3.20 5 Student 5 16 34 2.00 6 Student 6 10 40 4.00 7 Student 7 20 30 3.20 8 Student 8 16 34 3.20 9 Student 9 17 35 3.40 10 Student 10 17 33 3.40 11 Student 11 17 33 3.40 12 Student 12 17 33 3.20 13 Student 13 16 34 3.00 14 Student 14 15 35 3.00 15 Student 15 15 35 4.00 16 Student 16 20 30 3.80 17 Student 17 19 31 3.80 18 Student 18 19 31 2.60 19 Student 19 13 37 4.00 20 Student 20 20 30 3.80 22 Student 22 18 32 3.80 23 Student 23 19 31 3.40 24 Student 24 17 33 3.20 36 No Students Number of Correct Answer Number of Incorrect Answer Score 25 Student 25 16 34 3.80 26 Student 26 19 31 3.00 27 Student 27 15 35 2.60 28 Student 28 13 37 5.00 29 Student 29 25 25 3.20 30 Student 30 16 34 3.80 31 Student 31 19 31 2.40 32 Student 32 12 38 2.60 33 Student 33 13 37 4.60 Table 4.3 The Students Score of English Summative Test Type P3 No Students Number of Correct Answer Number of Incorrect Answer Score 1 Student 1 24 26 4.40 2 Student 2 22 28 4.40 3 Student 3 21 29 4.20 4 Student 4 8 32 1.60 5 Student 5 7 33 1.40 6 Student 6 18 32 3.60 7 Student 7 15 35 3.00 8 Student 8 19 31 3.80 9 Student 9 16 34 3.20 10 Student 10 16 34 3.20 11 Student 11 12 38 2.40 37 No Students Number of Correct Answer Number of Incorrect Answer Score 12 Student 12 14 36 2.80 13 Student 13 14 36 2.80 14 Student 14 15 35 3.00 15 Student 15 10 40 2.00 16 Student 16 19 31 3.80 17 Student 17 14 36 2.80 18 Student 18 14 36 2.80 19 Student 19 13 37 2.60 20 Student 20 14 36 2.80 21 Student 21 15 35 3.00 22 Student 22 13 37 2.60 23 Student 23 16 34 3.20 24 Student 24 14 36 2.80 25 Student 25 17 33 3.40 26 Student 26 17 24 3.40 27 Student 27 18 32 3.60 29 Student 29 21 29 4.20 30 Student 30 16 34 3.20 31 Student 31 18 32 3.60 32 Student 32 18 32 5.00 33 Student 33 25 25 5.20 This lists the students score based on the table 4.2 shows that there were two groups of the students score who get the highest to those who got the lowest. The score gained with the purpose is to make it easier to divide these students into 38 three group of each category of test type that is upper, middle, and lower group. Therefore, student number 1 to student number 15 are categorized as the Upper Group UG, student number 16 to student number 30 are categorized as the Middle Group MG and student number 31 to student number 45 are categorized as the Lower Group LG. To do the analysis of difficulty level and discriminating power, the groups that used to be analyzed are the UG and the LG only.

2. Analysis of the Data

The first step to do the difficulty analysis is listing the students’ responses of each number of the test. The list can be seen in the append ices of this “skripsi” labeled table 4. The second step is to make the format of item analysis. The technique of data analysis used in this researc h is quantitative. It’s calculated the data by using simple percentage formula to measure the difficulty level and discriminating power of each test item and then analyzed the difficulty level and discriminating power of each test item. This researched adopted this following formula to find out the difficulty level and discriminating power of each item in the last Examinations English Summative Test for Junior High School Level academic year 2013-2014 by the last E examinations’ English Summative tested at the first grade of students of “SMP Islam Annur TanahAbang Jakarta Barat: DL: The index of difficulty level U : The number of students in the upper group who answered the item correctly L : The number of students in the lower group who answered the item correctly T : Total number of students in upper and lower group DL= U + L T