The phrase "average field" is correct and usable in written English.
It can be used in contexts where you are discussing a typical or standard area of study, work, or interest within a specific domain.
Example: "In the average field of biology, researchers often focus on cellular processes and genetic variations."
Alternatives: "typical area" or "standard domain".
In the 11 runnings that produced a Triple Crown winner, the average field was 5.4 horses.
"For the average field biologist, merely doing your job could soon become a profile in courage".
The average field size for this meet is nine horses; last year field size averaged 7.44.
The average field size at this meet has been 6.9, down from 7.9 last winter.
In fact, a quick search suggests to me that only Warwick has had a better average field size in the past week.
The result is that the longer molecules move in the direction of the stronger field, while the shorter molecules move in the direction of the average field.
So that a reasonable treatment of electron energies may be developed, each electron is considered to move in an average field created by all the other electrons.
While he looked like the most talented horse in an average field last year, this is a much better race and the three-year-olds in particular appear significantly stronger than those Orfevre faced then.
The utility companies have said that the average field strength near the lines will average 3 to 6 milligauss, a tiny fraction of what exists around a microwave oven, Mr. Poirot said.
Fields are now smaller and more numerous than before: in 1980-85 the average field produced 26m barrels of oil a year; in 2005-10 that figure was 2.7m barrels, according to Oil & Gas UK.Technology has helped.
As Roman armies of the late Republic and Empire became larger and more professional, the cohort, with an average field strength of 360 men, replaced the maniple as the chief tactical unit within legions.
