Basic statistics

Reliability (Cronbach's alpha)

Check the internal consistency of a questionnaire scale before using its total score.

Data format

One column per item (question) with names in the first row, one row per respondent.

Q1, Q2, Q3, Q4
4, 4, 3, 5
5, 4, 5, 4
3, 3, 2, 3

You get

Cronbach's alpha and alpha based on standardized items
Corrected item-total correlation and alpha if each item is deleted

Downloads as Excel, PDF and Word.

Enter data

Variable names in the first row, then one row per observation (as in Excel or SPSS). A first column of labels such as P1, P2 is ignored. One column per item (question), one row per respondent.

or drag and drop here