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Data Quality Test Data Analysis Method

51 researchers. This data can be obtained from the literature, previous research journals, magazines, and data necessary documents in this study.

D. Data Analysis Method

1. Data Quality Test

This stage is the stage that is very important and decisive. At this stage the data is processed such that it successfully concluded the truth that can be used to address issues raised in the study. Data analysis methods used in this study using multiple linear regression analysis.

a. Validity Test

Validity is the level of research instruments to express the data in accordance with the matter to be disclosed. In other words, the validity indicates the extent to which a measuring instrument that can be used to measure what should be measured. Validity test is used to determine the feasibility of the items in a list of questions to define a variable. The list of questions generally support a group of specific variables. A questionnaire as valid if there are similarities between the data collected by the data actually happened on the object under study. Sugiyono, 2004: 172. In determining whether or not an item that will be used, usually to test the significance of the correlation coefficient in the minimum limit of correlation of 0.30, meaning that an item is considered valid if the total score is greater than 0.30 Duwi Priyatno, 2010: 90. 52

b. Relialibility Test

Reliability test is a measure of the stability and consistency of the respondents in answering the issues related to the constructs question is a variable dimension and are arranged in the form of a questionnaire. Said to be reliable or reliable instrument if someone answers to questions are consistent or stable from time to time. Reliability test is used to measure the variables used that are completely free of errors so as to produce a constant result though was tested several times. Reliability calculations performed using Cronbach Alpha statistical test. A construct or variable said to be reliable if the Cronbach Alpha value 0.60 Nunnally in Ghozali, 2005

E. Classical Assumption Test

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