I developed a questionnaire to measure some factors influence in decision using related literature and after some interviews. Now I have to validate and see how to distribute among the target group. I collected data from 40 students since my target population is 400. So when I run Cronbach alpha in SPSS it turned out to be more than 0.9 with all items. Does this confirm the internal validity of this instrument so I can proceed or do I have to check it further?
$\begingroup$
$\endgroup$
2
-
1$\begingroup$ stats.stackexchange.com/q/287494/3277 Alpha is not a measure of validity, it is one of measures of item homogeneity $\endgroup$– ttnphnsCommented Jul 22, 2017 at 14:18
-
$\begingroup$ so how to analyse the pilot data before give it to the main target group $\endgroup$– V AbeygunawardenaCommented Jul 24, 2017 at 3:57
Add a comment
|