Alpha if Item Deleted: Shortening the Scale
This lesson is part of the course
In this lesson
You recalculate alpha six times, each time without one item, and find the item whose removal raises the reliability of the DWS-6.
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Lessons in this course
- Reverse-Scoring Negatively Worded Items Locked
- Scale Totals, Means & the Missing-Item Rule Locked
- Standardised Scores: z-Scores and T-Scores Locked
- Cronbach's Alpha by Hand: Item Variances vs Total Variance Locked
- Item-Total Correlations: Which Items Belong? Locked
- Alpha if Item Deleted: Shortening the Scale Locked
- Test-Retest Reliability, SEM & Reliable Change Locked
- Norm Tables, Percentile Ranks & Normalised T-Scores Locked