/ ˈnɔːrml̩ ˌdɪstrəˈbjuːʃn̩ /
Množina reči normal distribution je normal distributions.
In statistics, a type of function that describes the probabilities of the possible values of a random variable. The function, whose graph is the familiar bell-shaped curve, can be used to determine the probability that the value of the variable will fall within a particular interval of values.
A theoretical distribution with finite mean and variance; SYN. Gaussian distribution.
In statistics, a symmetrical bell-shaped distribution whose mean, mode, and median all coincide; its equation may be expressed in terms of the mean (m) and standard deviation (s). Because of this, the area under the normal distribution curve has been tabulated in terms of the number (z) of standard deviations away from the mean. The probability of any score falling between two values may therefore be determined by calculating the area under the curve between those two values. For a normal distribution approximately two-thirds of the data falls within one standard deviation on either side of the mean; approximately 95% of the data falls within two standard deviations of the mean.