1. Ratio Analysis Go to finance.yahoo.com and enter the ticker symbol for Pfizer, PFE. Look under the “Statistics” link to find some ratios and other financial information for Pfizer. Discuss Pfizer’s performance by interpreting the following ratios (calculating them where necessary):

gross margin, operating margin, return on assets, return on equity, book value per share, earnings per share, cash flow per share, price-book, price-earnings, and price-cash flow.