The median. Open the Mean and Median applet. Let's use this applet to explore the median, another measure of the center of a set of data. Click below the line to enter 3 observations anywhere on the line. Think about labeling the observations 1, 2, and 3 from left to right. In other words, the smallest observation is 1, the middle observation is 2, and the largest observation is 3.
(a) Which observation is the median: 1, 2, or 3?
(b) Move the observations around a bit. How does the median change?
(c) What do you conclude from this exercise?