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They then go on to add the product of the two variables to the specification, finding that the original two variables become insignificant while their interaction is positive and significant (and the rsquared rises).

Â Having said that, the relationship is not very strong rsquared=.20, and there are certainly a number of exceptions to the general pattern.

There is hardly any relationship rsquared=.07, and slight pattern that does exist is nonsensical, indicating that Obama's best strategy would be to increase unemployment as much as possible.

Having said that, the relationship is not very strong rsquared=.20, and there are certainly a number of exceptions to the general pattern.

When I reran the same regression but dropped the “onepar” variable, the adjusted rsquared increased slightly.
Does This Analysis of Test Scores Make Any Sense? A Guest Post  Freakonomics Blog  NYTimes.com

His complaints are probably better aimed at Philosophy or History programs — unless he can tell us how Burke and Adams can contribute to rational choice, formal models, and higher rsquared values.

Even if you're just adding the trend as a smoother (and a moving average would almost always be a better way to smooth time series data, while a lowess would be the more normal way to smooth a scatterplot), selecting one by the rsquared criterion (or any other residual variance criterion) wouldn't necessarily make sense.
Overqualified?, Arnold Kling  EconLog  Library of Economics and Liberty

Thus the rsquared correlation between IQ and income is somewhere in the range of 10%.
IQ, Achievement Motivation, and Culture, Bryan Caplan  EconLog  Library of Economics and Liberty

If it's the rsquared, which would make the r about 17%, then it makes a bit more sense.
Lifespan and Heritability, Arnold Kling  EconLog  Library of Economics and Liberty

From text: Figures 5.2.7a and 5.2.7b shows the lack of meaningful relationship between normalized U.S. hurricane damages NHC data, transformed with the natural log and North Atlantic sea surface temperatures 19502005 and 19502004.47 The rsquared values are low with or without 2005
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