Calculate the Average: Finding the Mean of 30, 1, 2, and 3

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

• Step 1: Add up all the numbers given.
• Step 2: Count the total number of numbers.
• Step 3: Divide the sum by the total number to find the average.

Let's work through each step:

Step 1: Compute the sum of the numbers.

$30 + 1 + 2 + 3 = 36$

Step 2: Count the total number of numbers. Here, we have 4 numbers.

Step 3: Use the formula for the average:

$\text{Average} = \frac{\text{Sum of all numbers}}{\text{Total number of numbers}}$

$\text{Average} = \frac{36}{4} = 9$

Based on the calculation, the average of the numbers 30, 1, 2, and 3 is $\mathbf{9}$.

Thus, the correct answer is $\mathbf{9}$, which corresponds to choice id "1" in the answer choices.