> > Also, to your point about the score increases: it is true that the > > average scores for the two groups increased in roughly-equivalent > > magnitudes—about 12 points for the spaced group and about 10 points > > for the intuitive group. However, I specifically said that the spaced > > group showed a SIGNIFICANT (as in, p < .05) increase. The difference > > for the intuitive group was NOT statistically significant, largely due > > to the massive variance of the group. One reason the intuitive group > > has such a high average improvement, actually, is that one individual > > showed an improvement of 42 points between pre-assessment and post- > > assessment, which is a wholly anomalous score. My assumption is that > > that individual simply hadn't learned the material before the pre- > > assessment was administered, and so failed it terribly. > > Yes, that's true. My bad. I'd ask how they stack up if you remove that > one guy, but I remember vaguely you covered that. :)
I only covered it with regard to the correlations between pre- assessment scores and magnitudes of improvement, actually. If I remove the greatest outlier (in terms of improvement) from each group, the spaced group STILL shows a significant improvement, t(5) = 2.660, p < .05, with a mean improvement of 8.83 points. (The variance plummets from s2 = 153 to s2 = 66 for the spaced group's outlier removed, which I imagine is what helps to keep the distributions separate enough for significance.) The intuitive group, on the other hand, falls further from significance, t(5) = 1.511, with a mean improvement of only 4.83. In other words, with the outliers removed, the spaced repetition individuals show—on average—82.76% more improvement than the intuitive repetition individuals, rather than only 23.94% more improvement. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "mnemosyne-proj-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/mnemosyne-proj-users?hl=en -~----------~----~----~----~------~----~------~--~---
