This document defines key terms related to stocks such as stocks, dividends, dividend per share, stock market, market value, stock yield ratio, and par value. It provides examples of how to calculate dividend per share and stock yield ratio. Dividend per share is calculated by dividing the total dividend by total shares. Stock yield ratio is calculated by dividing the dividend per share by the market value per share. The document explains that the stock yield ratio can be used to compare investments and determine which provides a higher return per peso invested. It concludes with practice problems for readers to solve involving calculating dividend per share and stock yield ratio.