id: 06140341 dt: j an: 2013b.00748 au: McDaniel, Scott N.; Green, Lisa B. ti: Using applets and video instruction to foster students’ understanding of sampling variability. so: Technol. Innov. Statist. Educ. 6, No. 1, 17 p., electronic only (2012). py: 2012 pu: CDL, Los Angeles la: EN cc: K40 K60 D40 ut: sampling distributions; statistics education research; sampling variability; central limit theorem; simulation; guided learning; discovery learning; online learning ci: li: http://escholarship.org/uc/item/1nh4n607 ab: Summary: Online instructional modules that combine an applet, audio-visual tutorials, and guided discovery questions were created to teach the concept of sampling variability. The modules did contribute to an increase in understanding. However, they are a supplement to, not a replacement for, traditional instruction. The researchers found, using pretests and posttests, that student understanding of sampling distributions increased. There is room for futher improvement, which could be accomplished in two ways. A focus on designing for the introductory, rather than advanced, statistics student could be helpful. Also, giving students more feedback could help their performance in later modules. rv: