Calculate the Average: Finding Mean of 1 and 5

To solve this problem, we'll follow these steps:

• Step 1: Identify the given numbers, which are $1$ and $5$.
• Step 2: Apply the average formula $\frac{a + b}{2}$.
• Step 3: Perform the necessary calculations.

Let's work through each step:

Step 1: The numbers we need to average are $1$ and $5$.

Step 2: We use the formula for the average of two numbers:

$\text{Average} = \frac{a + b}{2}$

where $a = 1$ and $b = 5$.

Step 3: Plug these values into the formula:

$\text{Average} = \frac{1 + 5}{2} = \frac{6}{2} = 3$

Therefore, the average of $1$ and $5$ is $\mathbf{3}$.