Mathematical language isn't perfectly understood by many people. People may well mistakenly use "monthly average" when they actually want the 'average every month' but that doesn't change the meaning of those conditions, just as people crafting about "stationery cars" does not change the meaning of "stationery" or "stationary". Which https://financefeeds.com/fca-proposes-to-cut-reporting-burden-for-uk-fund-managers/