Published on October 17, 2008
Analyzing Data Using SPSS (Reliability)
Obtaining Reliability of Scale Obtaining Cronbach’s Alpha: Analyze -> Scale ->Reliability Analysis
Obtaining Cronbach’s Alpha:
Analyze -> Scale ->Reliability Analysis
Reliability Model -> Alpha
Model -> Alpha
Reliability Drag items on the left to the right dialog box In this case: items p1 to p21
Drag items on the left to the right dialog box
In this case: items p1 to p21
Reliability Press “statistics” Choose “scale if item deleted” Then Press “continue” Then “OK”
Choose “scale if item deleted”
Then Press “continue”
Reliability The SPSS Output
The SPSS Output
672 cases (observations/respondents) were used in the calculation of Cronbach’s alpha
The obtained alpha score is 0.915, which indicates that the scale has high internal consistency (reliability)
Under the “Cronbach’s Alpha if Item deleted” the reliability of 0.915 is the highest, so it is not necessary to delete any of the items to improve the reliability score of this scale
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