Fig. 3: A Category Probability Curve for the SE, showing the probability of selecting each response category (Strongly Disagree, Disagree, Neutral, Agree, Strongly Agree) relative to item difficulty. | Humanities and Social Sciences Communications

Fig. 3: A Category Probability Curve for the SE, showing the probability of selecting each response category (Strongly Disagree, Disagree, Neutral, Agree, Strongly Agree) relative to item difficulty.

From: Rasch analysis in developing a questionnaire to measure self-efficacy beliefs of Omani preservice science teachers for teaching through engineering design

Fig. 3

The x-axis measures item difficulty, and the y-axis shows category probability. The curves for each response category (‘SD’ in red, ‘D’ in blue, ‘N’ in magenta, ‘A’ in black, ‘SA’ in green) intersect across the difficulty range. This curve is based on the full set of 33 SE items.

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