Absolutely! Here’s a step-by-step guide to answering your question about using the **AVERAGEIF** function with **structured references** in Excel to determine the average number of years of experience for lifeguards. --- ### **Step 1: Introduction to the Concept** **AVERAGEIF Function:** The **AVERAGEIF** function in Excel calculates the average (arithmetic mean) of all the cells in a range that meet a given condition or criteria. **Structured References:** Structured references are special references used in Excel tables that use column names instead of cell addresses, making formulas easier to read and maintain. --- ### **Step 2: Identify the Table and Relevant Columns** Suppose you have a table named **Staff** with the following columns: - **Position** (e.g., "Lifeguard", "Manager", etc.) - **Years of Experience** We want to calculate the average years of experience **only for lifeguards**. --- ### **Step 3: Write the AVERAGEIF Formula Using Structured References** The syntax for **AVERAGEIF** is: ``` =AVERAGEIF(range, criteria, [average_range]) ``` Using structured references, the formula in cell **R9** would be: ``` =AVERAGEIF(Staff[Position], "Lifeguard", Staff[Years of Experience]) ``` - **Staff[Position]:** The column where we look for "Lifeguard" - **"Lifeguard":** The criteria - **Staff[Years of Experience]:** The column to average --- ### **Step 4: Enter the Formula in R9** Click on cell **R9** and type or paste the formula: ``` =AVERAGEIF(Staff[Position], "Lifeguard", Staff[Years of Experience]) ``` Press **Enter**. Excel will now display the average years of experience for lifeguards. --- ### **Step 5: Final Answer & Summary** **Final Answer:** Type the formula `=AVERAGEIF(Staff[Position], "Lifeguard", Staff[Years of Experience])` in cell R9 to get the average years of experience for lifeguards. **Summary of Steps:** We first understood what the AVERAGEIF function and structured references are, identified the relevant columns in the table, wrote the formula using structured references, and finally entered it into cell R9 to get the result.

In the first step, we introduced the **AVERAGEIF** function, which calculates the average of values based on a specific condition, and explained the use of **structured references**, which make formulas clearer by using column names in Excel tables. In the second step, we identified the relevant table and columns—specifically the "Position" and "Years of Experience" columns within the table named **Staff**—to focus on lifeguards. In the third step, we constructed the formula `=AVERAGEIF(Staff[Position], "Lifeguard", Staff[Years of Experience])`, which calculates the average years of experience for lifeguards using structured references. In the fourth step, we entered this formula into cell R9 and pressed Enter to display the result. Finally, we summarized that we used the AVERAGEIF function with structured references to compute the desired average, ensuring clarity and correctness in the process.