Final answer:
To calculate the average age of a group, you need to count the number of people in the group, sum the ages of all individuals, and then divide the sum by the number of people.
Step-by-step explanation:
To calculate the average age of a group, you would include all of the following steps:
- Count the number of people in the group: This step is necessary to determine the denominator when calculating the average. The number of people represents the total size of the group.
- Sum the ages of all individuals: You need to add up the ages of all the individuals in the group to calculate the total age.
- Divide the sum by the number of people: To find the average, divide the sum of ages by the total number of people in the group. This gives you the average age.