Dynamic Ratio traffic distribution

I would like to understand how does the Ratio translate to traffic distribution between the 2 nodes.

For example:

Node 1 ratio : 8

Node 2 ratio : 10

How does this translate to actual IP packet distribution?

Does it mean Packet 1 will go to Node 1, Packet 2 will go to Node 2, and RR until it reaches Packet 8?

Does the behaviour changes when SrcIP persistence is applied?

Assuming that clients are all using different IP, does it mean 1st user will reach Node 1, 2nd user will reach Node 2, until it reaches 8th User?

Further to this, in the SNMP DCA base monitor, how does the coefficient come into play together with the threshold?

I've seen the calculation matrix for the dynamic ratio, but i do not understand how does coefficient comes into play here. What is the significance of this coefficient?

Thanks all.