The Result of Instrument Testing
4.4 The Result of Instrument Testing
4.4.1 Validity Test
Validity is the reliability level of the measuring instrument used. Instruments are said to be valid if the measuring tool used to get the data is valid or can be used to measure what should be measured (Sugiyono, 2010). Thus, a valid instrument is an instrument that is really appropriate to measure what to measure.
Validity test in this case aims to test the level of accuracy of the instrument in measuring the variables contained in this study consisting of three variables ie online store atmosphere, attitude toward website, and purchase intention.the measurement of validity test instrument uses pearson correlation analysis. The decision on item is declared valid by comparing the value of r arithmetic with r value of table. If r arithmetic> r table then item item is valid. From the test result, the validity was tested on all sample, the r-table obtained was 0.296 and the result of validity test on each variable can be seen as on table 4.
4.4.1.1 Validity Test of Store Online Atmosphere (X) Variable
Table 4.9 Instrument Validity Test Results Variable Atmosphere Online Store Variable
Store Online 1 X 0.883
Source: Processed Data,2018
On Table 4.9, it can be seen that the value of r count (Corelation) of online store Atmosphere has a greater value than the r table for a sample of 100 people that is equal to 0.296. Thus, it can be concluded that all statements in the questionnaire of online Atmosphere variable is said as valid and fit to be used as a research instrument.
4.4.1.2 Validity Test of Attitude Towards Website (Z) Variable
Table 4.9 Validity Test Result of Attitude Toward Website (Z) Variable
Source: Processed data,2018
On Table 4.10 it can be seen that the value of r count (Corelation) on the competence variables have greater value than the r table that is equal to 0.296. So, it can be concluded that all statements in the questionnaire of Attitude Toward Website variable is declared valid and fit to be used as research instrument.
4.4.1.3 Validity Test of Purchase Intention (Y)
Tabel 4.10 Instrument Validity Test Results of Purchase Intention (Y) variable
Source: Data Processed 2018
In Table 4.11 it can be seen that the value of r count (Corelation) all have greater value than the r table for a sample that is equal to 0.296. So, it can be concluded In Table 4.11 it can be seen that the value of r count (Corelation) all have greater value than the r table for a sample that is equal to 0.296. So, it can be concluded
4.4.2 Reliability Test
Reliability according to Sugiyono (2009) is a series of measurements or a series of measuring tools that have a consistency when measurements made with the measuring instrument is done repeatedly. Conditions that can be proved by consistency of results from the use of the same measuring tool that is done repeatedly and gives relatively the same results. For subjective measurements, assessments made by at least two people can yield relatively similar results (reliability between assessors). From the data analysis, the reliability test obtained is described in the following table:
Table 4.11 Reliability Test Result
Variable
Cronbach’s
Note
Alpha
Store Online
0.60 Reliabel
Atmosphere (X) Attitude Toward
0.60 Reliabel
Website (Z) Purchase
0.60 Reliabel
Intention (Y)
Source: Data Proceed.2018
From the reliability test, it shows that the two variables of online store atmosphere, attitude toward website, and purchase intention are reliable because the value of r alpha> 0.60. This means that the alpha r is greater than the predetermined limit of 0.60 so it can be said that the instrument reliable which means that the instrument has a consistency when used for several times still it will l produce