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[QUOTE="statdad, post: 6866003, member: 136993"] If the predicted (fitted) y-values are ever referred to as unbiased estimators I've never encountered it. We say the estimated coefficients are unbiased estimators of the population coefficients [the parameters of the model] since the estimates have sampling distributions and the expected value of those distributions equal the appropriate parameters. There isn't a parameter that corresponds to yhat, so I'm not sure what quantity you would consider it to be unbiased for. [/QUOTE]
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