The median x50

See also: Probability parameters introduction, The mean

The median is the value that the variable has a 50% probability of exceeding, i.e.:

            F(x50) = 0.5

An interesting property of unimodal probability distributions relates the relative positions of the mean, mode and median. If the distribution is right (positively) skewed, these three measures of central tendency are positioned from left to right: mode, median, and mean. Conversely, a unimodal left (negatively) skewed distribution has them in the reverse order. For a unimodal, symmetric distribution the mode, median and mean are all equal.

Read on: The mode

 

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