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369 Prim. Res. Edu.<br />
Table 3: Confirmatory factor analysis<br />
Factors and item First-order<br />
Second-order<br />
description<br />
Loading t-value Loading t-value<br />
Reliability .62 10.83<br />
(1) .74 … a<br />
(2) .57 8.98<br />
(3) .55 8.72<br />
(4) .77 11.63<br />
(5) .80 11.64<br />
Responsiveness .84 11.85<br />
(1) .70 … a<br />
(2) .75 12.14<br />
(3) .80 11.64<br />
(4) .79 13.00<br />
Assurance .84 12.97<br />
(1) .79 … a<br />
(2) .75 14.20<br />
(3) .87 16.42<br />
(4) .77 13.45<br />
Empathy .57 10.99<br />
(1) .77 … a<br />
(2) .91 8.68<br />
(3) .59 9.09<br />
(4) .48 6.47<br />
(5) .57 8.24<br />
Tangible .70 9.32<br />
(1) .64 … a<br />
(2) .48 6.67<br />
(3) .57 6.47<br />
(4) .77 8.24<br />
Note: a Fixed parameter.<br />
Source: Author's computation<br />
LISREL 8.50, show good fitness of our model (χ 2 =243.62,<br />
df=104; P-value=0.00000; Goodness of Fit Index<br />
[GFI]=0.92; Adjusted Goodness of Fit Index [AGFI]=0.90;<br />
Root Mean Square Error of Approximation<br />
[RMSEA]=0.066). The results of confirmatory Factor<br />
Analysis have been shown in Table 3.<br />
As it can be seen in table 3, in first level factor analysis<br />
the factor value will be significant if the t- value is greater<br />
than 1.96 and it can be said that it has a positive and<br />
significant relationship with the factors. In addition, in the<br />
second level factor analysis the 5 dimensions measuring<br />
service quality have significant factor value (their t-value<br />
is larger than 1.96). Therefore it can be concluded that<br />
the dimensions assurance, tangibles, empathy, reliability<br />
and responsiveness have positive significant relationship<br />
with service quality. Finally, in light of first level and<br />
second level factor analysis results, factor analysis is<br />
reliable and the dimensions discussed are verified.<br />
RESEARCH RESULTS<br />
<strong>See</strong>k of service quality distribution<br />
One of the preconditions for testing the research<br />
hypothesis and determination of research components<br />
distribution is conducting Kolmogrov-Smirinov. In order to<br />
analyse the hypothesis in the present research we use<br />
per comparison test as long as the dimensions of<br />
SERVQUAL have normal distribution and we use pared<br />
sample t test which is a nonparametric test as long as the<br />
distribution of the dimensions is not normal. The results<br />
of test show that the 5 dimensions of SERVQUAL<br />
measurement have normal distribution. Therefore we<br />
used pared comparison test to test the hypothesis.<br />
Research hypothesis analysis<br />
Pared comparison test is a method used for pretest and<br />
posttest, which we use dependent samples observation.<br />
The test statistic is t and assuming unknown dσ is:<br />
,<br />
We use this test in empirical research and usually to<br />
show the influence of a particular kind of interventions.<br />
We use the following statistical assumption in order to<br />
test the research hypothesis.<br />
Mean difference is equal zero in both situations.<br />
H0: = 0