A Pareto chart is a bar graph in which each bar height shows the frequency of an event. The bars are arranged from left to right according to decreasing height. In this case, the event is spearheads recovered from ancient rivers. Begin by identifying the river with the highest frequency. Refer to the frequency table provided below. Bann Shannon Barrow No. of spearheads 14 The highest frequency corresponds to t Bann Blackwater Erne Submit wagon cannot come backi Shannon ' Barrow