A Framework of the Training Module for Untrained Observers in Usability Evaluation Motivated by COVID-19: Enhancing the Validity of Usability Evaluation for Children’s Educational Games

Table 4

Mann–Whitney U test statistics.

Test statistics^a
	Learnability	Memorability	Enjoyment	Difficulty of use
Mann–Whitney U	79.500	112.000	76.000	121.500
Wilcoxon W	289.500	322.000	286.000	331.500
Z	−3.353	−2.478	−3.456	−2.149
Asymp. sig. (2-tailed)	0.001	0.013	0.001	0.032
Exact sig. [2(1-tailed sig.)]	0.001^b	0.017^b	0.001^b	0.033^b

a: grouping variable: group. b: not corrected for ties.