Which of the following is a formula for calculating Inventory Turnover?

The formula for calculating Inventory Turnover is indeed found in the option provided. Inventory Turnover measures how efficiently a company manages its inventory and indicates how many times inventory is sold and replaced over a period, typically a year. The correct formula to calculate Inventory Turnover is the Cost of Goods Sold (often referred to as Cost of Sales) divided by the Average Inventory.

This ratio provides insight into the liquidity of inventory; a higher turnover rate suggests that merchandise is sold quickly and that the company is effectively managing its inventory levels. It reflects how well inventory is being converted into sales, which is crucial for operational efficiency and cash flow management.

The other options presented involve calculations related to sales, accounts receivable, and stockholders' equity, but they do not pertain to inventory management. Hence, they do not accurately represent the Inventory Turnover ratio.