The of two events X and Y is another event that consists of the sample space outcomes belonging to either event X or event Y or both events X and Y.

Union

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step-by-step explanation:

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.