The phrase "average over the study" is correct and usable in written English.
It can be used when discussing statistical analysis or summarizing data collected during a research study.
Example: "To obtain a clearer understanding of the results, we will average over the study's findings."
Alternatives: "calculate the mean across the study" or "compute the average throughout the study".
On average over the study period, 1986 to 2002, 117 people were killed on the nation's highways each day, day in and day out, year-round.
In the last 46 years, there was an increase by 2 and 3 °C in average over the study area for TXx and TNx, respectively.
Furthermore, looking at the highly populated prefectures of Saitama, Chiba, Tokyo, Kanagawa, Aichi, Osaka, and Fukuoka, where the population density is over 1000 people per km2, environmental efficiency in Tokyo, Kanagawa, and Aichi increased more than average over the study period; by contrast, it decreased in Saitama, Osaka, and Fukuoka.
This might be the case, for example, of a measured population average over the study area with true individual ambient levels varying randomly about this population average measurement.
The interdistrict differences are more pronounced for PM2.5: The mean 14-day average over the study period was about 1.5 times higher in Teplice (30.1 μg/m3) than in Prachatice (19.8 μg/m3).
8 On a national level, the proportion of reported cases based on only clinical diagnosis, without laboratory confirmation, was > 30% on average over the study period, but dropped to only 1% in 2013.
The colony contained about 500 breeding pairs and, averaged over the study's two years, herons caused the failure of 169 nests a year at the colony's centre, but only 92 a year at its edge.The herons took both eggs and hatchlings.
Mean rates at the peak week were averaged over the study years per age group.
The result is the gain per person averaged over the study population.
Quality and Outcomes Framework scores were averaged over the study years.
HCGI attack rates were within federal guidelines of tolerable risk when averaged over the study period.
