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. Author manuscript; available in PMC: 2011 May 11.
Published in final edited form as: Fam Med. 2008 NOV-DEC;40(10):726–733.

Figure 1.

Figure 1

Histograms of Student Scores on the Quality and Culture Quiz (QCQ)*

* There is a right shift in the direction of higher scores in the post-QCQ distribution compared to the pre-QCQ. 66.7% of students improved their score by 1–5 points, as shown in C.

A. Pre-QCQ scores, unpaired group. B. Post-QCQ scores, unpaired group. C. Score difference (post-pre), paired group.