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B. Analysis and Discussion
1. Data Quality Test
a. Validity Test
According to Ghozali 2006:49 the validity test is used to measure the validity of a Qustionnaire. A questionnaire is valid if the
questions on the questionnaire is able to reveal something that will be on the questionnaire measure. The total score on test validity said valid if the
number of scores 0.30 Sugiono, 2007:178. The questionnaire is divided into three main parts, those are
customers’ satisfaction Y and service quality X
1
and promotion X
2
. So, the number of statements in this questionnaire as many as 26 questions
with a total of 100 respondents. Before the questionnaire was given to 100 respondents, authors try to assess the validity and reliability of all such
question by spread the try out to 20 respondents.
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The size of the validity of each question can be seen in table 4.1 below:
Table 4.1 Validity Test Result
Question Numbers
Standard Value r
table Corrected
Item-Total Correlation
Value Result
1 0.4438
0.610 Valid
2 0.4438
0.589 Valid
3 0.4438
0.703 Valid
4 0.4438
0.703 Valid
5 0.4438
0.687 Valid
6 0.4438
0.539 Valid
7 0.4438
0.733 Valid
8 0.4438
0.555 Valid
9 0.4438
0.483 Valid
10 0.4438
0.460 Valid
11 0.4438
0.516 Valid
12 0.4438
0.560 Valid
13 0.4438
0.543 Valid
14 0.4438
0.547 Valid
15 0.4438
0.694 Valid
16 0.4438
0.646 Valid
17 0.4438
0.754 Valid
18 0.4438
0.784 Valid
19 0.4438
0.562 Valid
20 0.4438
0.517 Valid
21 0.4438
0.654 Valid
22 0.4438
0.540 Valid
23 0.4438
0.470 Valid
24 0.4438
0.674 Valid
25 0.4438
0.767 Valid
26 0.4438
0.562 Valid
Source: Primary data process 2015
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b. Reliability Test
Reliability refers to the extent to which a scale produces consistent result if repeated measurements are made on the characteristic. The value of
variable reliability demonstrated by the Cronbach Alpha coefficient. A variable is said to be the Alpha Cronbach coefficient of reliability when the
Cronbach Alpha value is 0.60, when the variable is said to be 0.60 not reliability Malhotra, 2004:267.
Table 4.2 The Result of Reliability Test
Service Quality X
1
Cronbachs Alpha
Cronbachs Alpha Based on
Standardized Items
N of Items
,856 ,859
19
Based on the table 4.2 above SPSS output, note that all variables have the value of Cronbachs Alpha is greater than 0.60. So it can be
summed up all the variables used in this study is reliable
Table 4.3 The Result of Reliability Test
Promotion X
2
Cronbachs Alpha
Cronbachs Alpha Based on
Standardized Items
N of Items
,693 ,696
4
Based on the table 4.3 above SPSS output, note that all variables
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have the value of Cronbachs Alpha is greater than 0.60. So it can be summed up all the variables used in this study is reliable
Table 4.4 The Result of Reliability Test
Customer Satisfaction Y
Cronbachs Alpha
Cronbachs Alpha Based on
Standardized Items
N of Items
,642 ,641
3
Based on the table 4.4 above SPSS output, note that all variables have the value of Cronbachs Alpha is greater than 0.60. So it can be
summed up all the variables used in this study is reliable.
2. Classic Asumption
Kategori