RESEARCH FINDINGS AND DISCUSSION by Sumayah (133221235 / 6G)

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 7^th 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