Multiple-choice questions (MCQs) | Principal component analysis* | |||
Factor 1 | Factor 2 | Factor 3 | Question-total correlation* | |
MCQ_1 | 0.03 | −0.18 | 0.78 | 0.21 |
MCQ_4 | 0.18 | 0.25 | 0.64 | 0.42 |
MCQ_5 | 0.36 | 0.16 | 0.25 | 0.32 |
MCQ_6 | 0.12 | 0.74 | −0.06 | 0.33 |
MCQ_7 | 0.11 | 0.16 | 0.48 | 0.28 |
MCQ_9 | −0.01 | 0.66 | 0.19 | 0.31 |
MCQ_10 | 0.68 | 0.09 | 0.03 | 0.38 |
MCQ_11 | 0.57 | 0.25 | 0.34 | 0.54 |
MCQ_12 | 0.82 | 0.05 | −0.03 | 0.42 |
MCQ_13 | 0.58 | 0.15 | 0.29 | 0.46 |
MCQ_15 | 0.27 | 0.39 | 0.01 | 0.28 |
MCQ_16 | 0.19 | 0.54 | 0.18 | 0.37 |
Explained variance | 2.10 | 1.68 | 1.60 | Total variance explained=44.8% |
% of variance | 17.5 | 14.0 | 13.4 |
*Factor saturations of test questions.