Item Analysis

SPSS offers procedure RELIABILITY to perform an item analysis. The most important elements of such an analysis are the corrected item-scale correlation, Cronbach's Alpha for the entire scale, and measures of Cronbach's Alpha if each individual item was deleted from the scale. These can be requested with the following

Example

RELIABILITY
	/ VARIABLES= welfare1 welfare2 welfare5 welfare7 welfare8
	/ STATISTICS=DESCRIPTIVE SCALE
	/ SUMMARY=TOTAL.