In this lesson, Nick Palazzolo, CPA, discusses the process of conducting analytical procedures as a part of an audit. He explains the importance of comparing current year balances with prior year balances or external data, such as competitor or industry averages. The lesson elaborates on various techniques for developing expectations of balances or ratios, including converting dollar amounts of income statement account balances into percentages of net sales, estimating expenses based on prior years and budgets, and comparing current year financial data with prior year sales volumes, among others. Additionally, the use of analytical procedures as a part of the planning and final review phase is emphasized.