Drive train and sprocket arrangement for human-powered vehicle

A drive train for a human-powered vehicle, comprising:

• a sprocket arrangement including a plurality of rear sprockets and a plurality of gear ratios respectively corresponding to the plurality of rear sprockets, the plurality of gear ratios including a largest gear ratio and a smallest gear ratio;
• the sprocket arrangement including at least one individual sprocket-space provided between two adjacent rear sprockets among the plurality of rear sprockets;
• the two adjacent rear sprockets being adjacent to each other without another rear sprocket therebetween in an axial direction with respect to a rotational center axis of the plurality of rear sprockets;
• and
• a force-transmission coefficient obtained by dividing a total gear range quotient by a total number of the at least one individual sprocket-space being equal to or larger than 0.97 and being equal to or smaller than 1.36, the total gear range quotient being obtained by dividing the largest gear ratio by the smallest gear ratio.