r function for prediction of prediction interval when using the mean squared prediction error loocv predict definition how to get linear regression model error variance what is lokov what is lolliv what is mean squared prediction error does luchv have the error range what is the mean squared prediction error in r what is lolliv used for what is the mean squared prediction error what is the variance of a fitted linear model r function to calculate the predicted value r function calculate variance which method uses the mean squared prediction error in r what is the r mean squared prediction error? when do you use the mean squared error from the lokocv which function is used to calculate prediction intervals from loocv? how to use LOCV when using loocv do you need the mean squared prediction error