8. Your friend is currently excited about Walmart's stock, believing that given current conditions, Walmart will continue to outperform. Your friend has looked at the P/E ratio, the change in Walmart's market capitalization over the last two years, and has calculated the debt to equity ratio. With the results of these three calculations, your friend is confident that Walmart stock is a strong buy. Is this simple ratio analysis adequate to support this decision? Should your friend consider anything else?