Mean of goals scored by A and B are 48 and 50 and their standard deviations are 6 and 4 respectively. The more consistent of the two performers is
We can say the player with the lesser coefficient of variation is more consistent in his performance.
C.V(A ) = σx×100=648×100=12.5
C.V(B ) = σx×100=450×100=8
You can clearly see that A has more variance compared to B. So B is more consistent.