The Students’ Achievement in Part A

Table 4.4 The Errors Classification Linguistic Category and Error Type Total Number of Errors Items Tested Percentage for replaced by to 153 686 22,3 to replaced by for 256 833 30,7 Table 4.4 above shows the errors that the students made in the test. It displays two classifications of error that the students made. As we can see, the highest number of error that the students made during the test is on the preposition to which is replaced by preposition for. According to the instrument, there are 833 items counted from the total number of items containing preposition to multiplied by total number of the students who became the respondents = 17 × 49 tested to 49 respondents students and 256 of tested items 30,7 produce errors. It means that there are 256 items of preposition to are replaced by preposition for. Meanwhile, according to the table above, there are 686 items counted from the total number of items containing preposition for multiplied by total number of the students who became the respondents = 14 × 49 tested to 49 respondents students containing preposition for and 153 of tested items 22,3 produce errors. It means that there are 153 items of preposition for are replaced by preposition to in the test. It can be concluded that the errors that the respondents made during the test in both items prepositions for and to are relatively equivalent.

3. Data Analysis

The data analysis contains the analysis of data which are used to answer the questions revealed in problem formulation. So as to answer the first question in the problem formulation, statistical computation is necessary required.

a. Reliability of the Test

The method applied to measure the reliability of the test in this research is the split-half technique test. The items of the test were divided into two halves, which were odd-numbered items and even-number items. Then, the scores of both halves were counted. In this research, The Pearson-Product Moment was applied in order to determine the correlation of these two-part score. The result of the coefficient correlation or the reliability of the half test was 0,98 see appendix 2. To define the reliability of the whole test, the researcher applied The Spearman- Brown Prophecy formula. The result was 0,99 see appendix 3, which points out that the test has high reliability Best, 1986: 240.

b. Descriptive Analysis Presentation

Since this research aims to figure out the students’ mastery in applying English preposition for and to, a descriptive analysis presentation was required. The descriptive analysis provides the mean, median, range, mode, and standard deviation. By providing these type of scores, the students’ mastery in preposition for and to can be determined. PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI