Step 1: Understand the concept of Inventory Turnover Ratio. It measures how efficiently a company manages its inventory by showing how many times inventory is sold and replaced over a period.
Step 2: Recall the correct formula for Inventory Turnover Ratio, which is \( \text{Inventory Turnover Ratio} = \frac{\text{Cost of Goods Sold}}{\text{Average Inventory}} \). This formula is used because it relates the cost of goods sold (COGS) to the average inventory held during the period.
Step 3: Analyze why other formulas provided are incorrect. For example, \( \text{Inventory Turnover Ratio} = \frac{\text{Gross Profit}}{\text{Average Inventory}} \) is invalid because gross profit is not directly related to inventory turnover. Similarly, \( \text{Inventory Turnover Ratio} = \frac{\text{Average Inventory}}{\text{Cost of Goods Sold}} \) reverses the relationship, and \( \text{Inventory Turnover Ratio} = \frac{\text{Net Sales}}{\text{Ending Inventory}} \) uses net sales and ending inventory, which are not appropriate for this calculation.
Step 4: To calculate the Inventory Turnover Ratio, gather the values for Cost of Goods Sold (COGS) and Average Inventory. Average Inventory is typically calculated as \( \text{Average Inventory} = \frac{\text{Beginning Inventory} + \text{Ending Inventory}}{2} \).
Step 5: Plug the values into the formula \( \text{Inventory Turnover Ratio} = \frac{\text{Cost of Goods Sold}}{\text{Average Inventory}} \) and simplify to find the ratio. This will give you the number of times inventory is turned over during the period.