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Table 5 Results of POLR analysis of students’ responses to versions C and D

From: Freshman Undergraduate Biology Students’ Difficulties with the Concept of Common Ancestry

Factor

Coefficient

P value

One level increase in taxonomic difference

−0.61

<10−16

Humans included in question

−0.21

0.020

Defined common ancestor

−0.25

0.0006

  1. The coefficient is the natural logarithm of the change in the odds ratio resulting from a change in the corresponding factor
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