The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).
In this INDEX / MATCH example, the MATCH function will find the position of Jacket in column B, and the INDEX function will return the code from the same position in column A. Set up the worksheet as shown at right. Enter the following formula in cell B6: =INDEX($A$2:$A$4,MATCH(A6,$B$2:$B$4,0))
INDEX & MATCH. Can be useful and can be a pain (great for dynamic ranges if you can't use a table) : OFFSET. There are then a plethora of other formulas that can be used if the need arises : text functions for cleaning data, statistical functions for analysis, date functions are all ones I use regularly.