Returning Earliest and Latest Date for a Unique ID

[chicity26]

Hi,

I need an excel function to return the earliest and latest date for a particular/unique ID.

For example: In my sample workbook, the earliest date for all the columns with ID = 1 should return 11/1/2001 and the latest date should be 12/2/2011. If all the dates for a particular ID are the same, it should just return that date. For example, for ID = 2, all dates are 5/5/2010 so the earliest and latest dates should equal 5/5/2010. The earliest and latest dates have to be for each unique ID.

I have attached the sample workbook and would appreciate any help or feedback.

Thanks!