Hi, 
I am trying to figure out the median number of days a site is in construction IF it is a Tier I, II, or III.
I am referencing another sheet.  Range 6 is referencing a column that has each site's construction duration.  Range 7 is the column the lists the sites tier level.
=MEDIAN({REFRESH - MASTER TRACKING SHEET Range 6}, IF({REFRESH - MASTER TRACKING SHEET Range 7}, "Tier I"))
I've tried a handful of variations, with and without the IF statement, but I've had no luck.
I appreciate any and all help!