I am running the following model, which seems to work and populate the added field that I want, but the final calculate field doesn't stop running even though it seemed to do what it should. The point shapefile has 48,000 rows. Essentially I am seeing if !Yield! is not more than 2 standard deviations away from the !Yield! mean. If it is within the 2 standard deviations then return 1 else return 2 into the column.
Value = mean of the yield
Value2 = standard deviation of the yield.
I am using ArcGIS Desktop 10.5.1.