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Figure 4. Comparing response times and item scores between those who strictly followed the quiz item sequence and those who did not (a modified graphics with three groups, ROD=0, 0<RO<50, ROD>50)
Students’ cumulative time used for taking the quiz is on the X-axis (shown on the log10 scale), and their cumulative mark is shown on the Y-axis. Each line represents one student and each dot on the line indicates one quiz item. The lines in blue represent students who strictly followed the original item sequence (i.e., ROD values = 0); the lines in orange highlight students who deviated highly from the original item sequence (i.e., ROD values > 50); and the lines in green represent students with the medium level of ROD (0<ROD<50).
Figure 3B Item response order for all students in one graph
The Y-axis is the original quiz item sequence (from items #1 to #14) and the X-axis represents individuals’ item response orders.
CESD Descriptive Statistics
Challenges from non-normality of outcomes
July 14, 2017
