The Book
There are some very good textbooks covering linear models. This one sets itself apart from this group by being specifically targeted to students of liberal-arts colleges. Additionally, this book offers a lot of the mathematics undergirding linear models, thus giving the teacher the options to teach as much, or as little, mathematics as desired.
Feel free to access the book and its supplemental files here. If you are not a student of mine, I only ask that you let me know that you are using it. Drop me an e-mail at the e-mail address given in the footers.
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