It’s been a pleasure speaking to groups around North Dakota this past week, in part because I was asked a lot of intelligent questions, which really forced me to think about the answers. One young woman asked how I maintained a positive attitude when times were difficult, when my husband died, when there is a…
Years ago, a friend of mine was in college and had an old, beat up car that leaked oil on to the street where it was parked, which, for some reason annoyed her elderly neighbor. When we returned from a trip overseas competing for the U.S., there was a notice on her car – the…
The results are in! The chart below gladdens my little heart, somewhat. One thing to note is the fact that the 95% confidence interval is comfortably above zero. Another point is that it looks like a pretty normal distribution. What is it? It is the difference between pretest and post-test scores for 71 students at…
Over the weekend, I wrote a post showing how SAS can be used to make what appears to be a complex problem quite simple. First of all, am I just being dramatic? Seriously, how can having your variable lengths differ be a disaster? Simple. You are merging by a variable that is a unique user…
Some problems that seem really complex are quite simple when you look at them in the right way. Take this one, for example: My hypothesis is that a major problem in math achievement is persistence. Students just give up at the first sign of trouble. I have three different data sets with student data from the Spirit…