Tutorvo

Scale Totals, Means & the Missing-Item Rule

Lesson 2 of 813 minLab

This lesson is part of the course

In this lesson

You score the DWS-6 for every respondent, apply a 'at least 5 of 6 items' rule, and prorate the total for a respondent who skipped one item.

Buy the course once for $9.99 to unlock every lesson and lab, the final exam and the certificate – lifetime access, no subscription.

Lessons in this course

  1. Reverse-Scoring Negatively Worded ItemsLab13 min Locked
  2. Scale Totals, Means & the Missing-Item RuleLab13 min Locked
  3. Standardised Scores: z-Scores and T-ScoresLab12 min Locked
  4. Cronbach's Alpha by Hand: Item Variances vs Total VarianceLab15 min Locked
  5. Item-Total Correlations: Which Items Belong?Lab15 min Locked
  6. Alpha if Item Deleted: Shortening the ScaleLab15 min Locked
  7. Test-Retest Reliability, SEM & Reliable ChangeLab15 min Locked
  8. Norm Tables, Percentile Ranks & Normalised T-ScoresLab15 min Locked