Skewness: A measure of the asymmetry or lack of symmetry in a probability distribution. Positive skewness indicates a distribution with an asymmetric tail extending towards more positive values, while negative skewness indicates a distribution with an asymmetric tail extending towards more negative values.
Kurtosis: A measure of the peakedness or flatness of a probability distribution compared to a normal distribution. High kurtosis indicates a distribution with a sharper peak and heavier tails, while low kurtosis indicates a distribution with a flatter peak and lighter tails.
Central Limit Theorem: A fundamental theorem in probability and statistics that states that the sampling distribution of the mean of any independent random variable will be normal or approximately normal, regardless of the underlying distribution of the variable, as the sample size increases.