Source: http://assessment.tki.org.nz/Assessment-tools-resources/Alignment-of-tools-with-National-Standards/Reading/Observation-Survey
Star plots are a more complex graph. The information they depict has multiple variables, and is spread across a 2D chart. In today's society they are commonly seen being used in sports to chart the players strengths, weaknesses, and overall performance on the team. Visually, they make it simple to view any outliers. This chart above represents reading achievement. The things that affect it most are letter identification- since the lines are the highest at the point.
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