e. Finally, as the vocabulary had been already rated, the process of collecting data was continued to the process of tabulating and analyzing with
statistical calculating method; 2. In terms of the administration of written test of descriptive text
a. This written test of descriptive text was conducted after the vocabulary test was already finished by the participants, so it was conducted
simultaneously in one occasion with vocabulary test; b. The participants were given three topics related to descriptive text, and
they were able to freely choose one of the topics. They were asked to make a short composition about the topic they chose with the length of words at
least 150 words in 30 minutes; a. After the written test had been conducted, the compositions were rated.
there were two raters involved to evaluate the written test. The two raters were given the copies of those compositions to be rated;
b. Finally, after the students’ compositions were rated, the process of collecting data was continued to the process of tabulating and analyzing
with statistical calculating method.
F. Technique of Data Analysis
In analyzing the data of this study, the Pearson product moment correlation was used of which formula as follows:
r
xy
= Notes:
r
xy
: correlation coefficient
N: the total of sample participating in this study
: the total score of students’ vocabulary mastery
: the total score of students’ writing descriptive text ability
: the total of multiple score of students’ vocabulary mastery and their writing descriptive text ability
2: the total of square score of students’ vocabulary mastery
2: the total of square score of students’ writing descriptive text ability The data was analyzed through some steps as follows:
1. Determining the scores of N, ,
, ,
2, and 2;
2. Determining and calculating the scores of r
xy
using Product moment correlation formula;
3. Interpreting the scores of r
xy
using the Table 3.1 below:
Table 3.1 Table of
r Score Interpretation
1
The r score scales
Interpretation of r correlation
0.800—1.00 very high
0.600—0.800 high
0.400—0.600 moderate
0.200—0.400 low
0.000—0.200 very low
4. interpreting and comparing the scores of r
xy
based on the significant standard 5 and 1;
5. drawing conclusion based on the interpretation of r
xy.
G. Statistical Hypotheses
The statistical hypotheses of this study are symbolized into: H
1
: ρ ≠ 0 or if r
xy
rt, H1 is accepted, and H0 is rejected; H
: ρ = 0 or if r
xy
rt, H0 is accepted, and H1 is rejected. The statistical hypotheses above may be explained as follows:
- Alternative hypothesis H
1
: there is any significant relationship between students’ vocabulary mastery and their writing descriptive text ability;
- Null hypothesis H
: there is no any significant relationship between students’ vocabulary mastery and their writing descriptive text ability.
1
Suharsimi Arikunto, Prosedur Penelitian Suatu Pendekatan Praktik, Jakarta: Rineka Cipta, 2010, p. 319.
