"arithmetic average" . "AM" . . "averaging" . "Average" . "averaged" . "Arithmetic return" . "mathematical mean" . . . "average (or mean)" . "Arithmetic mean" . "Arithmetic Mean" . "mean value" . "Arithmetic mean" . . "average rating" . "arithmetic" . "mean distance" . . . "x\u0305" . . "the arithmetic mean" . "Pefsu problem" . "weighted average score" . . "mean average" . "average (mean)" . . "Half-way point" . "sample means" . "average" . "mean" . . . "Mean" . . "M" . . "sample mean" . . . "arithmetic returns" . . . . . . "arithmetic mean" . . . . "means" . .