In round one, Jeff completed 16 - 1 = <<16-1=15>>15.
In round two, Jeff completed 16 - 3 = <<16-3=13>>13.
In round three, Jeff completed 16 + 4 = <<16+4=20>>20.
In round four, Jeff completed 16 / 2 = <<16/2=8>>8.
Jeff completed 15 + 13 + 20 + 8 = <<15+13+20+8=56>>56 skips in total.
Jeff skipped an average of 56 / 4 = <<56/4=14>>14 skips per round.
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