In this lesson, we will review three essential concepts in statistics: Standard Deviation: Learn how to measure the spread or dispersion of data points around the mean. Discover its importance in understanding variability within a data set. Coefficient of Variation (CV): Understand how to express the relative variability of data in percentage terms. CV allows for the comparison of the variability of different data sets, making it a valuable tool in decision-making. Empirical Rule: Explore a fundamental rule in statistics that describes the distribution of data within one, two, and three standard deviations from the mean. Discover how this rule helps interpret data distributions and identify outliers.