When calculating a group retirement date in Excel, there are a few things to keep in mind. First, you'll need to decide on the date range that you want to use. This can be any range that you like, but for the sake of this example, we'll use a 10-year period. Next, you'll need to calculate the number of years each person in the group has been working. This can be done by subtracting the person's start date from their current date. Finally, you'll need to average these years together to get the group's average tenure.
To do this, first select the cell where you want the group's average tenure to appear. Then, type "=AVERAGE(". After this, select the cells that contain each person's tenure (these should be adjacent to each other). Finally, type ")" and hit enter. This will give you the group's average tenure in years.
Now that you have the group's average tenure, you can use this to calculate their retirement date. To do this, simply add the average tenure to the starting date of the range that you selected earlier. For example, if the starting date was 1/1/2000 and the average tenure was 10 years, then the group's retirement date would be 1/1/2010.
You can use this same method to calculate a retirement date for any group of people in Excel. Simply select the cells containing each person's start date and tenure, then use the AVERAGE function to find their average tenure. Finally, add this number of years to the starting date to find the group's retirement date.