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By definition, an outlier will not have the same value as other data points in the dataset. So, the correct question is "What is the effect of an outlier on a dataset's mean." The answer is that the outlier moves the mean away from the value of the other 49 identical values. If the outlier is the "high tail" the mean is moved to a higher value. If the outlier is a "low tail" the mean is moved to a lower value.

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โˆ™ 2009-04-10 14:57:49
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Q: If an outlier is included with a sample of 50 values all of which are the same what is the effect of the outlier on the mean?
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