Metatrader volume

I'm fairly new at this and still practicing on demo.I know that forex volume is not centralized, but what does the "volume" plotted on Metatrader represent?

Is is only the volume traded in the market of the broker's liquidity providers? Or is it something else?

If indeed is only partial volume, do you usually take it into consideration when placing a (discretionary) trade or prefer to ignore it because it does not reflect the whole market?

Volume on Metatrader is calculated based on the number of ticks for any given time frame, more ticks=more volume and vice versa, it has no relation with your MT broker's liquidity providers. Do a search in the forum and I'm sure you'll find many threads about volume and similar stuff.

Have a nice weekend!

don't rely on any volume you get in any platform. forex is not centralized, therefore there is no way to know the exact volume