The effect of elevation on temperature can be examined by graphing the two measurements. This scatter plot shows temperatures associated with different elevations in Colorado on August 13, 2001.
A trend line can be plotted to show
the "best fit" of a line through the points. While the
line does not cross over every point, it has been drawn
so that there is roughly the same number of points above
the line as below it.
the "show trend" button to reveal the trend line.