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Mean and median. Open the Mean and Median applet. Let's use this applet to explore these two measures of the center of a set of data. Click below the line to enter 5 observations on the left part of the line that are approximately equally spaced. The green arrow marks the location of the mean, and the red arrow marks the location of the median.

(a) Describe the location of the mean and the median.

(b) Drag the largest observation to the right and back again. How did the mean and median change? Summarize your findings.

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