NORMAL DISTRIBUTION

noun Date: 1897 a probability density function that approximates the distribution of many random variables (as the proportion of outcomes of a particular sort in a large number of independent repetitions of an experiment in which the probabilities remain constant from trial to trial) and that has the form f(x) = (1/(σ√2π)) e (- 1/2[(x - μ)/σ]²) where μ is the mean and σ is the standard deviation