Statistical Hypothesis THEORETICAL FRAMEWORK

To provide an additional vivid description of the data distribution of collocation knowledge, the histogram of frequency distribution is presented in figure 4.1 as follows: Figure 4.1 The Histogram of Data of Collocation Knowledge From the figure 4.1 above, the total number of students is 46 students. The student who got score 45 is 1 student, students who got score 50 are 5 students, score 55 are 5 students, score 60 are 7 students, score 65 are 8 students, score 70 are 7 students, score 75 are 3 students, score 80 are 5 students, score 85 are 3 students, student who got score 90 is 1 student, and score 95 is 1 student. Apparently, from the symmetrical bell-shaped curve, it shows that the data of collocation knowledge is normally distributed. Furthermore, the statistical score of collocation knowledge were counted using Frequencies of Descriptive Statistics in SPSS statistic program version 22.0 to know the mean, mode, median, and standard deviation score of the collocation knowledge test. It can be described as follows: Table 4.2 The Statistical Score of Collocation Knowledge Statistics Collocation Knowledge N Valid 46 Missing Mean 66.63 Median 65.00 Mode 65 Std. Deviation 11.928 Variance 142.283 Range 50 Minimum 45 Maximum 95 Sum 3065 From the descriptive statistic above, the respondents of this study are 46 students. The mean of collocation knowledge score is 66.63 which means that the average score the students obtained. The median score or the middle score of collocation knowledge is 65.00. Then, the mode score or the score that appears the most is 65. It means that most of students obtained 65 in collocation knowledge test. In addition, the highest score of collocation knowledge is 95 whereas the lowest score is 45. Therefore, the range score between the highest and the lowest score is 50. The last, the standard deviation of collocation knowledge test is 11.928 with variance 142.283. In Department of English Education, the score are characterized as follows: 80—100 = A 70—79 = B 60—69 = C 0—59 = D An “A” is characterized as an excellent score. It is the highest score and the students who obtained it passed the test excellently. Then, “B” is characterized