It is related to damping in the circuit using a resistor.
Q is inversely proportional to the resistor(R).
So if the value of resistance is high, there is a greater
damping and the value of Q will be low.
if resistance is low, there is small damping and Q will be
high.
when Q is high(low damping) the graph of voltage across resistor
against frequency will be sharp at resonance and the bandwidth will
be small
when Q is low(high damping) thee graph will be less sharp as the
bandwidth will be large.
Go do some research on the graphs and the formula of Q factor to
understand it better.