WEBVTT

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What happens when one observation becomes extreme?

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40, 45, 50, 55, and 60 thousand dollars.

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The mean is 50. The median is also 50.

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Move the fifth observation from 60 to 600.

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The mean jumps to 158. The median remains 50.

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A mean is a balancing point. A median is the middle ordered value.

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Predict what will happen before moving the outlier slider.