Fig. 9

Statistical analysis of the knowledge assessment data collected before (i.e. pre-test) and after (post-test) e-learning practical work. Statistical analysis of the knowledge assessment data collected before (i.e. pre-test) and after (post-test) e-learning course administered to the participants/students of the e-learning practical work. Total score obtained on pre-test versus post-test knowledge assessment a all students (i.e. both experimental groups of students: electrical engineers and natural scientists), b electrical engineers and c natural scientists and percent of correct answers per question/item (i.e. item difficulty): d all students (i.e. both experimental groups of students: electrical engineers and natural scientists), e electrical engineers, and f natural scientists