RESEARCH
FINDINGS AND DISCUSSION
Subject of Data Analysis Led by
Zainal Arifin, M. Pd
This paper is written by Sumayah
(133221235 / 6G)
A. Data Description
The data analyzed in this research are the result
of the questionnaire and test. The research description is based on the score
from questionnaire to know the students’ vocabulary mastery. The test is used
to know the students’ reading skill in 7th grade students of SMP
*beep* Surakarta in the Academic Year of 2016/2017. The obtained of the data
can be described as follows:
1.
The
data of students’ vocabulary mastery (X)
No.
|
Name of
Students
|
Score
|
1
|
Student
number 1
|
53
|
2
|
Student
number 2
|
23
|
3
|
Student
number 3
|
63
|
4
|
Student
number 4
|
97
|
5
|
Student
number 5
|
57
|
6
|
Student
number 6
|
60
|
7
|
Student
number 7
|
60
|
8
|
Student
number 8
|
60
|
9
|
Student
number 9
|
70
|
10
|
Student
number 10
|
70
|
Table 1 The Obtained Data of Students’ Vocabulary Mastery
From the
instrument of students’ vocabulary mastery questionnaire with 20 item numbers,
the data that is obtained describe that the highest score is 97 and the lowest
score is 23. The mean is 61,3; the median is 60; and the mode is 60. The
standard deviation is 18,22. The frequency distribution data of students’
vocabulary mastery is presented in table 2 and the histogram is presented in
figure 1 as follows:
No
|
Class
Limit
|
Class
Boundaries
|
Midpoint
|
Tally
|
Frequency
|
Percentage
|
1
|
23-41
|
22,5-41,5
|
32
|
1
|
10,00
|
|
2
|
42-60
|
41,5-60,5
|
51
|
5
|
50,00
|
|
3
|
61-79
|
60,5-79,5
|
70
|
3
|
30,00
|
|
4
|
80-98
|
79,5-98,5
|
89
|
1
|
10,00
|
|
10
|
100
|
Table 2 Frequency Distribution of Students’ Vocabulary Mastery
Figure 1 Histogram Data of Students’ Vocabulary Mastery
Table 2
shows how many students who got the highest, middle, and the lowest score of students’
vocabulary mastery in percentage. Based on the histograms at figure 1 above,
clearly shows that students who got the highest score range of 42-60 is about
50% or 5 students. The students with score range of 23-41 is 1 student,
followed by 61-79 are 3 students, and 80-98is 1 students.
2.
The
Data of Reading Skill (Y)
No.
|
Name of
Students
|
Score
|
1
|
Student
number 1
|
70
|
2
|
Student
number 2
|
40
|
3
|
Student
number 3
|
67
|
4
|
Student
number 4
|
93
|
5
|
Student
number 5
|
60
|
6
|
Student
number 6
|
67
|
7
|
Student
number 7
|
63
|
8
|
Student
number 8
|
67
|
9
|
Student
number 9
|
73
|
10
|
Student
number 10
|
77
|
Table 3 The Obtained Data of Students’ Reading Skill
The data of
students’ reading skill was collected by using a test. The highest score is 77
and the lowest score is 40. The mesn is 64,7 and the standard deviation is
10,01. The frequency distribution of the reading skill score is presented at
the table 5 and histogram is given at figure 2.
No
|
Class
Limit
|
Class
Boundaries
|
Midpoint
|
Tally
|
Frequency
|
Percentage
|
1
|
40-53
|
39,5-53,5
|
46,5
|
1
|
10,00
|
|
2
|
54-67
|
53,5-67,5
|
60,5
|
5
|
50,00
|
|
3
|
68-81
|
67,5-80,5
|
74
|
3
|
30,00
|
|
4
|
82-95
|
81,5-95,5
|
88,5
|
1
|
10,00
|
|
10
|
100,00
|
Table 5 Frequency
Distribution of Students’ Reading Skill
Table 5 shows
that the students’ percentage of 40-47 is 10%. 0% is the number of students’ in score
range 48-55 and the number 30% is come from score range 56-63. The highest percentage is 50% that is in
64-71 range of score. Students’ percentage of 72-79 is 10%.
Figure 2 Histograms Data of Students’ Reading Skill
Figure 2 clearly
shows that the students who got the highest score range of 64-71 are 4
students. The students with score range of 72-79 are 2 students and students
with score range 40-47 is 1 student, followed by 3 students in the score range
of 56-63.
B.
The Data Analysis
No
|
Interval
Class
|
F
|
Xi
|
Xi²
|
F*Xi
|
F*Xi²
|
1
|
23-41
|
1
|
32
|
1024
|
32
|
1024
|
2
|
42-60
|
5
|
51
|
2601
|
255
|
13005
|
3
|
61-79
|
3
|
70
|
4900
|
210
|
14700
|
4
|
80-99
|
1
|
89
|
7921
|
89
|
7921
|
10
|
586
|
36650
|
1.
Analysis
Unit
a.
Analysis
Result of Students’ Vocabulary Mastery
Table 6 The Data Description of Students’ Vocabulary Mastery
1)
Range
R = (The
highest score) – (The Lowest Score)
= 97 – 23
=74
2)
Mean
= 
3)
Standard Deviation
S = 
= 
= 
=16,02
Based on the analysis above, the data of
students’ vocabulary mastery: the highest score is 97, the lowest score is 23,
the range of the class is 74, mean is 61,3 and the standard deviation is 16,02.
b.
Analysis Result
of Reading Skill
No
|
interval
class
|
F
|
Xi
|
Xi²
|
F*Xi
|
F*Xi
²
|
1
|
40-53
|
1
|
32
|
1024
|
32
|
1024
|
2
|
54-67
|
5
|
51
|
2601
|
255
|
13005
|
3
|
68-80
|
3
|
70
|
4900
|
210
|
14700
|
4
|
81-95
|
1
|
89
|
7921
|
89
|
7921
|
10
|
586
|
36650
|
Table 7 The Data
Description of Reading Skill
1)
Range
R = (The
highest score) – (The Lowest Score)
= 93 – 40
= 53
2)
Mean
= 
3)
Standard Deviation
S =
= 
= 
= 11,58
Based on the analysis above, the data of
reading skill: the highest score is 93, the lowest score is 40, the range of
the class is 53, mean is 67,7 and the standard deviation is 11,58.
files attached:
https://drive.google.com/open?id=0ByLDIsLZOkElT3puX0RNbEM1cUE
https://drive.google.com/open?id=0ByLDIsLZOkElT3puX0RNbEM1cUE
