B. Research Findings
1. Data Description
Having finished the field research on the form and the usage test of present perfect tense, the writer obtained the score. The following table is the
classification of the form and the usage into area tested. Table I
Area tested of form and usage No Area
tested Item
1. Form A
1-10 2. Usage
B 1-10
2. Data Analysis
After getting the data, the writer analyzed the data by using a formula to find out average score mean as following:
M = TS N
M = Mean Score
TS = Total of the Scores N = Number of the Students
Besides the formula above, the writer also used the percentage the test formula, as follow:
P = F x 100 N
P = Percentage F = frequency
N = Number of the Students
29
a. Form Difficulty
To know the test result of the students in form of the present perfect tense, the writer shows table as follow:
Table II The Students Scores of Form
Students Scores 1
2 3
4 5
6 7
8 9
10 11
12 13
90 90
90 90
90 90
80 80
70 70
70 70
60
29
Drs. Anas Sudijono, Pengantar Statistik Pendidikan, Jakarta: PT Raja Grafindo Persada, 2001, p. 40
14 15
16 17
18 19
20 21
22 23
24 25
26 27
60 50
50 40
40 30
30 30
30 30
30 30
30 30
N = 27 TS = 1550
The writer uses formula to find the mean, as follow: M = TS
N = 1550
27 = 57.4
According to the data above, it is found out that the mean score is 57.4
Suharsimi in her book writes the classification of scores as follow
30
: Table III
The Classification of Scores by S. Arikunto Score Grade
Remark 80 – 100
Excellent A
66 – 79 Good
B 56 – 65
Fair C
40 – 55 Poor
D 30 – 39
Fail E
Based on the classification of scores above, it can be divided into the high, middle, and low scores:
The high scores: 80 – 100 The middle scores: 56 – 79
The low scores: 30 – 55 Furthermore, the writer will determine the percentage of the score by
using formula below: P
= F
x 100 N
P = Percentage F = Frequency
N = Number of Students
30
Suharsimi Arikunto, Dasar-dasar Evaluasi Pendidikan, Jakarta: Bumi aksara, 2003, p. 251
Table IV Percentage Range of the Form of Present Perfect Scores
No CS F
P 1
The high score 8
29.63 2
The middle score 6
22.22 3
The low score 13
48.15 27
100
CS = Classification of Scores
F = Frequency
P = Percentage
b. Usage Difficulty
To know the test result of the students test in usage of present perfect tense, the writer shows the tables as follow:
Table V The Students Scores of Usages
Students Scores 1
2 3
4 5
6 80
80 60
60 60
60
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 60
50 40
40 40
40 30
30 30
30 30
30 30
30 30
30 30
30 30
30 30
N = 27 TS = 1120
To find the mean score, the writer uses formula: M = TS
N = 1120
27
= 41.5 According to the data above, it is found that the mean score is 41.5
Furthermore the writer will determine the percentage of the score by using the formula below:
P = F x 100 N
Table VI Percentage Range of the Usage of Present Perfect Scores
No CS F
P 1
The high score 2
7.41 2
The middle score 5
18.52 3
The low score 20
74.07 27
100
3. Data Interpretation
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