Examlex
When we wish to determine the probability that at least one of several events will occur,we would use the addition rule.
Variability
A statistical measure that describes the dispersion or spread of data points in a data set.
Standard Deviation
A statistical measure of the dispersion or variability of a set of data points around their mean.
Mean Deviation
The average deviation for all scores from the mean of a distribution, calculated as the sum of the absolute value of the scores’ deviations from the mean divided by the number of scores.
Standard Deviation
Standard deviation is a measure of the dispersion or spread of a set of data points relative to its mean, indicating how spread out the data points are.
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