Ryx1x2=
√
Note: Ryx1x2
= correlation between X1 and X2 variables with Y variable
ryx1 = Product Moment Correlation between X1 and Y
ryx2 = Product Moment Correlation between X2 and Y
rx1x2 = Product Moment Correlation between x1 and x2
The following steps were used to examine the hypothesis: 1.
Finding out the similarities of simple regression and the multiple one between independent and dependent variables.
2. Examining the similar linearity of regression.
3. Summing up the simple and multiple relationship coefficients
between independent variable and dependent variable. 4.
Summing up the partial relationship coefficients between independent variable and dependent variable by controlling
another independent variable. 5.
Summing up the contribution of each independent variable to dependent variable.
Besides using the previous techniques, to describe the data of each research variable, the analysis descriptive technique was
also used, it was including: 1.
Calculating the central tendency which consists of determining Mean, Modus and Median.
2. Calculating the distribution tendency which consists of
determining range, standard deviation and variance.
CHAPTER IV RESEARCH FINDING
This chapter contains the explanation of 1 data description, 2 analysis requirement test and 3 hypothesis test.
A. Data Description of Research Finding
This study consists of three variables; reading ability on Descriptive text Y as dependent variable, Students‘ reading
Interest X1 and Vocabulary mastery X2 as independent variables.
Based on the calculation, to provide the general description of dissemination research finding data, the description of research
finding data is provided as follows. The provided data was the data that processed by using descriptive statistic technique. The data
description of each variable was provided in the form of frequency distribution, total score, average score, standard deviation, mode,
median, maximum score and minimum score.
1. Data of Reading Ability on Descriptive Text Y
Data of reading ability on descriptive text Y that uses 40 items as the research instrument is acquired theoretical score range
–40 and the empirical score 30 which are 3 as the lowest score, 33 as the highest one, and the total score 2304. Based on data
analysis finding, it shows the average score Ỹ is 16.00, standard
deviation SD is 5.08, the most frequency score Mo is 13.22 and the medium score Me is 15.39. The amount of class is 8 and the
class length is 4.
97
The dissemination data of reading ability on descriptive text Y variable can be seen from the table of distribution frequency as
follows:
97
See Appendix 4
Table 4.1 Distribution Frequency Score of Reading Ability on Descriptive
Text Y
Class Class
Interval Absolute
Frequency Relative
Frequency Cumulative
Frequency 1
3 –6
4 2.8
2.8 2
7 –10
13 9.03
11.83 3
11 –14
45 31.25
43.08 4
15 –18
30 20.83
63.91 5
19 –22
37 25.69
89.60 6
23 –26
12 8.3
97.90 7
27 –30
2 1.40
99.30 8
31 –34
1 0.70
100
∑
144 100
Referring to the theoretical score range 0 –40 in which 0 as
the minimum score and 40 as the maximum one, therefore, the theoretical medium score is 15.39 whereas the average score
Ỹ= 16.00 is located in the theoretical score range as showed in the
figure 4.1.
Figure 4.1 Theoretical Score Range of Students’ Reading Ability on
Descriptive Text
As displayed in Figure 4.1 that the average score of Y variable is 16.00, it is higher than the medium score which is 15.39.
It means that the score of reading ability on descriptive text is Minimum Score
Medium Score Ỹ Maximum Score
15.39 16.00 40
