Academic Lineage and Student Performance in Medical School Page: 39
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39
The null hypothesis of no difference between the mean ranks was rejected based
on the results of the Kruskal-Wallis test. Table 12 presents the data for the multiple
comparison tests between the Carnegie classifications for medical school class rank.
Table 12
Dunn Multiple Comparison Tests
for Carnegie Classification and Class Rank
Comparison Difference Standard Test Critical Conclusion
between Error Statistic Value
mean ranks Q (QO.05,4)
1 vs 2 51.76 45.9163 1.127254 2.639 Accept Ho
1 vs 3 6.40 40.19823 0.159211 2.639 Accept Ho
1 vs 4 49.77 36.94681 1.347072 2.639 Accept Ho
2 vs 3 58.16 35.08789 1.657552 2.639 Accept Ho
2 vs 4 101.53 31.31021 3.242712 2.639 Reject Ho
3 vs 4 43.37 22.08768 1.963538 2.639 Accept Ho
According to these data, the only significant difference found was between groups 2
(master's) and 4 (research), p=3.242712. Therefore, the null hypothesis of no difference
between the mean ranks of groups 2 and 4 was rejected. The remaining null hypotheses
were accepted.
Failure Rate
Table 13 presents the data for the third hypothesis which stated that no association
exists between Carnegie classification and the failure rate of students in medical school.
The number of students who failed or were dismissed was computed and a failure rate or
proportion was calculated for each Carnegie classification.
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Wright, James Scott. Academic Lineage and Student Performance in Medical School, dissertation, August 1999; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc2206/m1/48/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .