common errors r which statement is an error when lm is used in a linear model r error with lm r error in formula for ozone r error with data in ozone what is this error in model frame r common r error in ozone what is an error with ozone? r error with ozone what is the r error when you add a lm variable into the data frame r error with lm lm common r what is an r error r error lm r error for ozone data common r error sql lm which type of function is an error in model.frame.default what is lm in r what is ozone r example what type r error is ozone?