8. Archaeology: Ireland Commercial dredging operations in ancient rivers occasionally uncover archaeological artifacts of great importance. One such artifact is Bronze Age spearheads recovered from...

Extracted text: 8. Archaeology: Ireland Commercial dredging operations in ancient rivers occasionally uncover archaeological artifacts of great importance. One such artifact is Bronze Age spearheads recovered from ancient rivers in Ireland. A recent study gave the following information regarding discoveries of ancient bronze spearheads in Irish rivers. River Bann Blackwater Erne Shannon Barrow No. of spearheads 19 15 33 14 (Based on information from Crossing the Rubicon, Bronze Age Studies 5, Lorraine Bourke, Department of Archaeology, National University of Ireland, Galway.) (a) Make a Pareto chart for these data. (b) Make a circle graph for these data.