criterion, standard, touchstone, measure - a basis for comparison; a reference point against which other things can be evaluated; "they set the measure for all subsequent work"

statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters

statistic - a datum that can be represented numerically

age norm - the average age at which particular performances are expected to appear

modal value, mode - the most frequent value of a random variable

median, median value - the value below which 50% of the cases fall

mean, mean value - an average of n numbers computed by adding some function of the numbers and dividing by some function of n