Determining Reliability for Likert Scale Questions Using Chronbach's Alpha in SPSS

This video demonstrates how to use the software package SPSS to calculate the reliability of likert scale items using Chronbach's Alpha. Please like this video if you found it helpful.

[kossonouprunelle]

i have 12 items with 26 questions in my questionnaire (6 likert scale, 3 nominal and 3 ordinal items). Should i measure Cronbach Alpha for the entire scale
? Or choose some between them to check the reliability of my questionnaire? Thank you for the presentation

[charliepower]

You didn't explain WHY they were reliable