I have two columns of data as shown below. I'd like to write a formula where
I can take the average of the values from column B that are between two
corresponding values in column A. For example, the average from 1.1 to 1.5 =
9.44. Typical data contains about 20k rows and the values in column A are
not always in the same row when doing this in multiple worksheets. What if
I'd like my reference in column A to be near a value but not necessarily
equal to it?

thanks,

BD

A B
1.0 8.9
1.1 9.8
1.2 9.5
1.3 9.2
1.4 9.1
1.5 9.6