Research Finding and Discussion

 

CHAPTER IV

RESEARCH FINDING AND DISCUSSION

A.                Description of the data

The research description below is based on the scores from the test to know the students’ vocabulary mastery and their reading comprehension skill. It is presented in the form of score, variance, mean, median, mode, standard deviation, the highest and lowest score that is completed with the variable description in the form of histograms.The data obtained namely: The Correlation Between Students vocabulary and Reading Comprehension Skill can be explained as follow :

1.    The data of vocabulary mastery

The data of students vocabulary mastery were obtained from a test. The data was taken from 25 students as the sample of the research. The students’ vocabulary mastery is gotten from the score of the test and the frequency distribution is presented in the form of table and it is included with the histogram as follow :

a.         The table score of students’ vocabulary mastery

Number	Score		Number	Score
1	30		14	45
2	30		15	50
3	30		16	50
4	35		17	50
5	40		18	55
6	40		19	55
7	40		20	55
8	40		21	60
9	40		22	60
10	45		23	60
11	45		24	65
12	45		25	70
13	45		∑	1180

From the data above, the highest score of the test is 70, and the lowest score is 30, therefore the range is 40. Then from the computation of the data of students' vocabulary mastery, it is acquired :

1)      Mean

Mean is the average value of a data group. It is gained from summing up the individual data of the group and dividing it by the total of the individuals: ( Djiwandono,2007:212)

Mean : ∑x

         n

     : 1180

         25

     : 47,2

     Where  : ∑x  : Summing up the data of group

                       n    : The total of individuals

                          After being computed, it can be seen the mean of the data is 47,2.

2)      Median

Median is the scores which are arranged based on the amount, which is in the middle between the lowest and the highest scores ( Djiwandono, 2007: 212 ). Then to find the median, the researcher has to arrange the scores of the respondents from the lowest up to the highest as below : 30, 30, 30,35,40, 40,40,40,40 45,45,45,45,45,50,50,50, 55,55,55,60,60,60,65,70

The median is : 45.

3)      Mode

According to Brown ( 1996:104 ) states that Mode is that score which occurs most frequently. Therefore from the score above, the mode is 45.

4)      Standard deviation

Standard deviation is the distance of an individuals value from the mean. The formula according to James Dean Brown (1996:107) :

The standard deviation formula is :

 

  = 10.90489187

Where            : ∑x     :  The summing up from the score

                        ‾x        :  The mean of the score

               n       :  The sum of respondents

b.      Data table of vocabulary mastery

No	Classification	Number
1	The maximum score	70
2	The minimum score	30
3	The range score	40
4	The total score	1180
5	Mean	47,2
6	Median	45
7	Mode	45
8	Standard deviation	10,904

c.       Histogram of the data vocabulary mastery

2.     The data of reading comprehension.

 

The data of students reading comprehension obtained from the test. The data was taken from 25 students as the sample of the research. The reading comprehension level is gotten from the score of the test and the frequency distribution is presented in the form of table and it is included with the histogram as follow :

 

a.       The table score of students’ reading comprehension.

Number	Score		Number	Score
1	23		14	63
2	37		15	63
3	47		16	67
4	47		17	67
5	47		18	67
6	47		19	67
7	53		20	70
8	57		21	70
9	60		22	73
10	60		23	73
11	60		24	73
12	63		25	73
13	63		∑	1490

From the data above,the highest score of the test is 73, and the lowest score is 23, therefore the range is 50. Then from the computation of the data of students’ reading comprehension, it is acquired :

1)      Mean

Mean is the average value of a data group. It is gained from summing up the individual data of the group and dividing it by the total of the individuals: ( Djiwandono,2007:212)

Mean : ∑x

         n

     : 1490

         25

     : 59,6

     Where  : ∑x  : Summing up the data of group

                       n    : The total of individuals

                          After being computed, it can be seen the mean of the data is 59,6

2)     Median

Median is the scores which are arranged based on the amount, which is in the middle between the lowest and the highest scores ( Djiwandono, 2007: 212 ). Then to find the median, the researcher has to arrange the scores of the respondents from the lowest up to the highest as below : 

23,37,47,47,47,47,53,57,60,60,60,63,63,63,63,67,67,67,67,70,70,73,73,73,73. Therefore  the median is : 63. 

3)      Mode

According to Brown ( 1996:104 ) states that Mode is that score which occurs most frequently. Therefore , from the score above the mode is 63.

4)      Standard deviation

Standard deviation is the distance of an individuals value from the mean. The formula according to James Dean Brown (1996:107) :

The standard deviation formula is :

 12,47664485

Where           : ∑x     :  The summing up from the score

  ‾x       :  The mean of the score

   n       :  The sum of respondents

   

b.      Data table of reading comprehension

No	Classification	Number
1	The maximum score	73
2	The minimum score	23
3	The range score	50
4	The total score	1490
5	Mean	59,6
6	Median	63
7	Mode	63
8	Standard deviation	12,47664485

c.       Histogram of the data reading comprehension

 

                                                         DISCUSSION

A.  The Discussion of the Research 

               The researcher get the result of the computation after analyzing of all of the data. The result of the students’ Vocabulary mastery  test shows that the highest score is 70 and the lowest score is 30. So the range is 40. The mean of the total score is 47,2. The median is  45, the mode is 45 and the standard deviation is 10.90489187. The result of reading comprehension test shows that the highest score is 73 and the lowest score is 23. So the range is 50. The mean of the total score is 59,6. The median is  63, the mode is 63 and the standard deviation is 12,47664485. 

               Based on the computation result of hypothesis testing, it shows that there is a positive significant correlation between students’ vocabulary mastery and reading comprehension. 

 

APPENDICES

Appendix 1

The data of students’ vocabulary mastery

No	Score	Sort of Score
1	55	30
2	65	30
3	70	30
4	55	35
5	35	40
6	40	40
7	55	40
8	45	40
9	60	40
10	40	45
11	45	45
12	40	45
13	50	45
14	60	45
15	60	50
16	45	50
17	30	50
18	45	55
19	30	55
20	50	55
21	40	60
22	40	60
23	30	60
24	45	65
25	50	70
	∑	1180
	n	25

 

Appendix 2

 

The highest score		70
The lowest score		30
Range / r		40
Log n	1.39794
Class	5.613202	6
Interval	6.6666667	7
Mean	47.2
Mode	45
Median	45
STDEV	10.904892

Appendix 3

Class Limit	Class Boundaries	Midpoint	Tally	Frequency	Percentage
29-35	28,5-35,5	32	IIII	4	16
36-42	35,5-42,5	39	IIII	5	20
43-49	42,5-49,5	46	IIII	5	20
50-56	49,5-56,5	53	IIIII	6	24
57-63	56,5-63,5	60	III	3	12
64-70	63,5-70,5	67	II	2	8
				25	100

Appendix 4

 

                         Appendix 5

No	Score	Sort of Score
1	60	23
2	70	37
3	37	47
4	63	47
5	47	47
6	67	47
7	73	53
8	53	57
9	47	60
10	47	60
11	67	60
12	60	63
13	70	63
14	57	63
15	63	63
16	63	67
17	73	67
18	23	67
19	73	67
20	67	70
21	63	70
22	47	73
23	60	73
24	67	73
25	73	73
	∑	1490
	n	25

Appendix 6

The highest score		73
The lowest score		23
Range / r		50
Log n		1.39794
Class		5.613202029	6
Interval		8.333333333	9
Mean		59.6
Mode		63
Median		63
STDEV		12.47664485

Appendix 7

Class Limit	Class Boundaries	Midpoint	Tally	Frequency	Percentage
22-30	21,5- 30,5	26	I	1	4
31-39	30,5- 39,5	35	I	1	4
40-48	39,5-48,5	44	IIII	4	16
49-57	48,5-57,5	53	II	2	8
58-66	57,5-66,5	62	IIII II	7	28
67-75	66,5-75,5	71	IIII   IIII	10	40
				25	100

Appendix 8