Author Archives: canoemoore

Applying generalizability theory with R

One of the things I like about my current job is getting to apply generalizability theory. I have to confess that I didn’t appreciate G theory at first, but now that I’m analyzing data from performance assessments (i.e., ratings of … Continue reading

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Estimating congeneric reliability with R

I was recently tasked with estimating the reliability of scores composed of items on different scales. The lack of a common scale could be seen in widely varying item score means and variances. As discussed by Graham, it’s not widely … Continue reading

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Converting Rasch units (RITs) to thetas

How do you place Measures of Academic Progress (MAP) Rash unit scores (RITs) on the normal theta metric (and vice versa)? I searched the Web but couldn’t find a straightforward answer. What I’ve gathered from various sources is that RIT … Continue reading

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Urban canoeing: Dining at The Sample Room

I finally found some time to upgrade my Wike canoe trailer. As I mentioned in an earlier post, the trailer had a hard time handling Scrappy, my 17′ Alumacraft canoe. I added a U-bolt to adequately secure the bow, and … Continue reading

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Urban canoeing: North/Northeast Minneapolis

Back in July, my friend, Joe, and I were laid off during the state government shutdown. It was a stressful time, not knowing if or how the shutdown would end and having to cut back on expenses to make up … Continue reading

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