So, how's your summer been?
Blogging restarts after I shake off some jet-lag; standby...
Chopin plays the... thing.
ADDING: You really should read the last post; it's pretty good, even with all those scatterplots:
More to come.
This is the graph of the mapped proficiency score (x-axis) against the actual mean scale score (y-axis) on the NAEP for Grade 8 reading. The NAEP also tests math, and in Grade 4; go back to the original post to see those graphs. What you'll see in every case is a "cloud" of points, which means there is no meaningful correlation between the mapped proficiency score a state sets and its actual performance on the test.
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