Financial returns often exhibit distributions with "fatter" tails than a normal distribution, meaning extreme market events occur more frequently than standard models predict .
Unlike many physical systems, the statistical properties of financial markets—such as mean and variance—often change over time . Key R Packages for Financial Analysis Statistical Analysis of Financial Data in R
R's ecosystem provides specialized libraries designed to handle the complexities of financial time series and portfolio management: or "stylized facts
Financial data analysis is characterized by several unique statistical properties, or "stylized facts," that require specialized modeling techniques: " that require specialized modeling techniques: