Internal consistency

From Wikiversity

• Internal consistency (or internal reliability) is a way of measuring the amount of inter-correlation amongst a set of measurement items
• Internal consistency is often measured using Cronbach's α.
• Cronbach's α ranges between 0 to 1
• The more items, generally the higher the internal reliability will be
• General guide:

.6 = OK

.7 = Good

.8 = Very Good

.9 = Excellent

>.95 = too high; items are too inter-related and therefore some are redundant

[edit] Data analysis

• Data analysis tutorial

[edit] See also

• Cronbach's alpha (Wikipedia)
• Internal consistency (Wikipedia)
• Reliability