# Which measure of central tendency is most affected if an outlier is present?

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Jan 29, 2017

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The mean is most affected if an outlier is present.

#### Explanation:

The median is considered resistant to outliers because, while the mean takes into its calculations every single data value, the median is simply a measure of central tendency with the overall distribution taken into consideration, since any outliers would have been either a lower extreme or a higher extreme. When calculating for a median, however, you're really only looking at the middle values.

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