Dictionary
normal distribution
noun
Definition of NORMAL DISTRIBUTION
: 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 
where μ is the mean and σ is the standard deviation — compare normal curve
where μ is the mean and σ is the standard deviation — compare normal curve ADVERTISEMENT
First Known Use of NORMAL DISTRIBUTION
1897
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