Ratio analysis is a technique used to interpret financial statements and evaluate the operating performance and financial position of a company. It involves calculating and comparing various financial ratios related to liquidity, profitability, and solvency. Some key liquidity ratios discussed in the document include the current ratio, acid-test ratio, and cash ratio. Turnover ratios measure how efficiently a company manages its assets, such as inventory and accounts receivable. The document provides formulas and interpretations for various financial ratios.