To calculate the mean (average) age, you sum the ages of all individuals in the group and then divide by the total number of individuals.
Here's a breakdown of the process:
- Sum the Ages: Add up the age of each person in the group you're analyzing.
- Count the Individuals: Determine the total number of people in the group.
- Divide: Divide the sum of ages (from step 1) by the total number of individuals (from step 2).
Formula:
Mean Age = (Sum of All Ages) / (Total Number of Individuals)
Example:
Let's say you want to find the mean age of 5 people with the following ages: 10, 12, 15, 18, and 20.
- Sum of Ages: 10 + 12 + 15 + 18 + 20 = 75
- Total Number of Individuals: 5
- Mean Age: 75 / 5 = 15
Therefore, the mean age of this group is 15 years.
Another Example (Based on Reference):
If the total age of 15 children is 168, the mean age is calculated as:
Mean Age = 168 / 15 = 11.2 years.
In Summary: Calculating the mean age is a straightforward process of summing all the individual ages and dividing by the number of individuals in the group.
