The document discusses key statistical terms used in analyzing portfolio performance including mean, standard deviation, variance, correlation coefficient, and normal distribution. It explains how mean measures average returns, variance and standard deviation measure risk/volatility, and correlation measures the relationship between two investments. The document also covers portfolio theory, the efficient frontier, and risk/return analysis tools like the Sharpe Ratio and Value at Risk (VAR) that are used to evaluate portfolio performance based on expected return and risk.