. 2006 Summer;5(2):158–166. doi: 10.1187/cbe.05-09-0116

Table 6.

Results of the nonparametric Wilcoxon ranks test between presenter pre- and postsurveys in Corpus Christi Neuroscience Expositions

Survey questions	Expositions
Survey questions	Corpus Christi I	Corpus Christi II
1. Your skills in presenting neuroscience knowledge to these children	Z = −2.26	Z = −2.30
	p = 0.024^a	p = 0.022^a
2. The interest level of these children in neuroscience	Z = −2.11	Z = −2.90
	p = 0.035^a	p = 0.004^a
3. The interest level of these children in your presentation	Z = −2.30	Z = −3.18
	p = 0.003^a	p = 0.001^a
4. How difficult was it for you to present your project to these children?	Z = −2.95	Z = −1.15
	p = 0.003^a	p = 0.249
5. How successful do you think your project was?	Z = −2.65	Z = −1.73
	p = 0.008^a	p = 0.083
Summed scores of presenters' presentation skills	Z = −3.42	Z = −2.33
	p = 0.001^a	p = 0.020^a
Summed scores of children's interest in neuroscience	Z = −2.76	Z = −3.40
	p = 0.006^a	p = 0.001^a

The exact Z value and p value of the Wilcoxon Ranks test are displayed.

^a Indicates the difference reached a significant level (p < 0.05).