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...my data with mean. besides I caculated R2 by myself but it cannot match the R2here I think R2=1-sum((y-x%*%lobj$beta)^2)/var(y)*19 #I have 20 observations...my R2 is lower than the one here Thanks a lot -- View this message in context: http://r.789695.n4.nabble.com/the-output-of-function-lars-tp3078460p3078460.html Sent from the R help mailing list archive at Nabble.com.