The phrase "average index of the" is correct and usable in written English.
It can be used when discussing statistical measures or data analysis, particularly when referring to a calculated average of a specific index.
Example: "The average index of the economic indicators suggests a steady growth in the market."
Alternatives: "mean value of the" or "typical index of the".
Over the same period, the Dow Jones industrial average index of the nation's biggest stocks has fallen by 10%.
When Si was evaporated, silicon oxyfluoride films turned out to be inhomogeneous in the refractive index and the average index of the SiOxFy films was varied from 1.41 to 1.44.
Then the preference of an index could be sketched through the correlation coefficient between two variables, namely the index of a author and the average index of the author's neighbors.
After this transformation, the obtained values were between negative 10 and positive 10, while zero corresponded to the average index of the whole city.
11 The impact of the US subprime mortgage crisis on the world immediately reflected on the Korean economy, and the KOSPI (Korea Stock Exchange Index) declined more rapidly than the Dow Jones Industrial Average index of the USA.
Because of the existence of propagation modes outside of the light lines, however, the propagation of light inside the PhC is still allowed if the light source is inside of the PhC or the refractive index of the incident medium becomes significantly close to the average index of the PhC.
We determine the average index of refraction from the critical angle occurred at the discontinuity of the phase difference of two polarized lights.
The average index of difficulty was 0.55, close to the optimum of 0.50 (Craighead and Nemeroff, 2001).
This maximal value in the pl-spectrum may be interpreted as an average index of preservation for copies of the estimated periodicity pattern.
There was no absorption by pyrene at the scattering wavelengths so the average index of refraction was determined by optical microscopy using index matching fluids (Cargille catalog #18005).
The magnitudes of the antibody responses against each antigen are presented as the average Index of Reactivity (IR).
