The phrase "average monthly volume of" is correct and usable in written English.
It can be used when discussing metrics or statistics related to quantities measured on a monthly basis, often in business or analytical contexts.
Example: "The average monthly volume of sales increased significantly over the last quarter."
Alternatives: "mean monthly quantity of" or "typical monthly amount of".
Its average monthly volume of 150,000 contracts -- each representing 10 metric tons of cocoa beans -- makes Willy Wonka and his Chocolate Factory look like chump change.
And the average monthly volume of attacks is up 23%.
The average monthly volume of text messages was 1 million in 2002.
The average monthly volume of outpatients was 140,040 between 2001 to 2005 [ 33].
During the 24-month period when the data were reported, the average monthly volume of family planning services of cohort 2005 is 45.22 more than that of cohort 2007, and difference is statistically significant (p <0.05).
The data collected included the following: accreditation of the hospitals, the average monthly volume of emergency department patients from March to May 2003, the effects of the SARS epidemic on emergency department workers, types of PPE supplied, kinds of ICMs implemented, as well as timing and origin of instruction to use PPE and ICMs during the SARS epidemic.
One-way analysis of variance (ANOVA) was used to test the differences in the average monthly volumes of patients among different levels and types of emergency departments.
Average monthly volume was 86.2 (SD=13) patients.
On TransFS, businesses submit information about their transactions including the percentage of online, in-store, mail-order and phone transactions; the merchant's current credit-card processing fees; and monthly volume of sales and average transaction size.
The average monthly service volume of outpatient visits for the base year 2002 was 52317 ± 4204 visits per month, and number for 2003 and the following two years were 55%, 82%and84%4% of the base year respectively.
