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. 2020 Nov 23;20:449. doi: 10.1186/s12909-020-02269-0

Fig. 2.

Fig. 2

Relation between ranking of the elective in the academic years 2015/2016 and 2016/2017. Figure 2 studies the relation between students’ preferences in two consecutive years through Pearson’s correlation. The Pearson’s correlation r observed was 0.836 (95% C.I.: 0.707–0.911), meaning that there is a strong positive relationship between students’ preferences in two consecutive years