The phrase "a quarterly average of" is correct and usable in written English.
It can be used when discussing statistical data or financial figures that are calculated on a quarterly basis.
Example: "The report indicates a quarterly average of sales that has increased over the past year."
Alternatives: "an average per quarter" or "a quarterly mean of".
It suggested momentum was continuing after a poor year in 2011 which had a quarterly average of 12 - the lowest average since 2003.
Expansion stage investment came in at $185 million, falling from a quarterly average of $352 million last year.
Early stage investment into Los Angeles area companies fell to $78 million in the first quarter, down from a quarterly average of $247 million in 2015.
Manchester has the largest UK office market outside London according to GVA Grimley with a quarterly average office uptake of approximately 230,000 square ft – more than the quarterly office uptake of Leeds, Liverpool and Newcastle combined and nearly 80,000 square feet more than the nearest rival Birmingham.
Quarterly investment in bars and coins surged to a new record of 109.5 tons in China, compared with a five-year quarterly average of just 43.8 tons.
The quarterly average of 31 IPOs that has prevailed over the past two years is less than two-thirds the quarterly average of 53 IPOs produced during 2013 and 2014.
Inventory is now 6,851 listings, just shy of the 10-year quarterly average of 7,094, Mr. Miller said.
Mr. Miller, the appraiser and author of the Prudential Douglas Elliman quarterly report, pointed out that Manhattan had 5,923 co-ops and condominiums for sale in the first quarter of 2007, compared with the median quarterly average of 5,200 over the last five years.
The figure was 10% lower than the same period the previous year and in line with the quarterly average of 2010, the Council of Mortgage Lenders (CML) said.
Figures 4 and 5 present the quarterly average of TTHM and HAA9 levels measured in all sampling sites during 2007, respectively.
the quarterly averages of the current year from the previous.
