I want to test the reliability of my measurement model (The Technology Acceptance Model (Davis, F.D.)) using Cronbach's Alpha. I am completely unfamiliar with statistical methods and can't make head or tail of how Cronbach's Alpha maths work.
The Technology Acceptance Model has 3 main constructs that I have collected data:
Perceived Usefulness (PU)
Pereceived Ease-of-use (PEoU)
I have surveyed 50 people with 13 questions:
6 questions relating to PU (PU1, PU2, PU3, PU4, PU5, PU6)
6 questions relating to PEoU (PEoU1, PEoU2, PEoU3, PEoU4, PEoU5, PEoU6)
1 question relating to ATT (ATT1)
Can I insert this into an Excel sheet and apply a formula? If so, how would I do this with the information above?
Or will I have to use stats software like Lisrel8.8 or AMOS5?