internal consistency

How is Internal Consistency Measured?

Internal consistency is typically measured using statistical methods such as Cronbach's alpha. Cronbach's alpha ranges from 0 to 1, with higher values indicating greater internal consistency. Generally, a Cronbach's alpha of 0.70 or above is considered acceptable, though some fields may require higher thresholds. Other methods include the Kuder-Richardson Formula 20 (KR-20) for dichotomous items and Split-Half Reliability, which involves dividing the test into two halves and correlating the scores.

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