This is the most depressing chart I have seen in a long time. Below are the results of our pretest on knowledge of fraction operations of 322 students in grades 3 through 7, attending schools on and adjacent to American Indian reservations. These are questions like, “Drag 6/1 to the correct spot on the number…
I was going to call this new category for my blog “Mama AnnMaria’s advice on not getting your ass fired” but it turned out to be too long to fit in the box. It may surprise young people in the work place to find out that people who admit to having screwed up are often…
What if you wanted to turn your PROC MIXED into a repeated measures ANOVA using PROC GLM. Why would you want to do this? Well, I don’t know why you would want to do it but I wanted to do it because I wanted to demonstrate for my class that both give you the same…
I have been teaching at the post-secondary level since 1987, at schools ranging from a small liberal arts college in North Dakota to the second-largest non-profit university in the country. I’ve taught at private schools and public ones, and courses ranging from first year undergraduate to doctoral students. In all of those situations, some students…
Any time you learn anything new it can be intimidating. That is true of programming as well as anything else. It may be even more true of using statistical software because you combine the uneasiness many people have about learning statistics with learning a new language. To a statistician, this error message makes perfect sense:…
I’ve been busy my whole life. Right now, I’m finishing the last week of a course I’m teaching on biostatistics, writing a lecture for a course on multivariate statistics that starts next week, fixing bugs in our next game, Fish Lake, working on a new project for free resources for teachers, and working on a…
In August, I attended a class at Unite 2014 (on Unity game development) and the presenter said, “And some of you, your code won’t run and you’ll swear you did exactly what was shown in the examples. But, of course, all of the rest of us will know that is not true.” This perfectly describes…
Computing confidence intervals is one of the areas where beginning statistics students have the most trouble. It is not as difficult if you break it down into steps, and if you use SAS or other statistical software. Here are the steps: 1. Compute the statistic of interest– that is mean, proportion, difference between means 2….
A recent tweet about mixed martial arts decisions set me to thinking about probability. @Fight_ghost tweeted that a TV commentator made no sense when she said that she thought a fighter should have won by split, not unanimous decision. Others on twitter agreed with him that was a stupid comment, and asked did she think…
Lately, I’ve seen a lot of examples of this … Malicious obedience is discussed on the englishstackexchange page (who even knew this existed) as “….when people set their boss up to fail by doing exactly as he or she says even though they know in their hearts that their actions are incorrect or not optimal.”…