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Should the outlier be used when reporting the average test mark?
Wiki User
∙ 10y ago
Outliers, that is scores outside the expected range can distort the average score for the test. As a result, many teachers will dismiss the high and low score in averaging the test and establishing the curve for grading. This theory is why the median can be more valuable than the mean in evaluating test performance.
Wiki User
∙ 10y ago
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