Today's episode details various statistical concepts. One segment focuses on probability theory, covering fundamental concepts like probability, random variables, and bivariate distributions. Another segment explains measures of dispersion, including mean deviation, standard deviation, variance, and the coefficient of variation, illustrating calculations for both raw and grouped data. A third segment describes measures of shape, specifically skewness and kurtosis, providing formulas and examples.  Finally, several sources address quantiles (quartiles, deciles, percentiles), explain their calculation and interpretation for grouped and ungrouped data, and compare them to the median.

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