Long description

A schematic of three graphs showing characteristics of the author over a year. In the top graph the horizontal axis is time measured in weeks and the vertical axis is height. In the middle graph the horizontal axis is time measured in weeks and the vertical axis is waistline, and in the bottom graph the horizontal axis is time measured in weeks and the vertical axis is weight. There are no units on any axis. The height of the author does not change over the year and so the data on the top graph is a flat line parallel to the horizontal axis, i.e. the value for height does not change. The data on the middle graph (the author’s waistline) and bottom graph (the author’s weight) do vary throughout the year and they vary together. For the first quarter of the timescale both the middle (waistline) and bottom (weight) graphs show similarly increases. For the second and third quarters of the timescale both plots show a decreases. Finally, for the last quarter, both plots show increases again. The three graphs show that although the author’s height does not change over the timescale, the author’s waistline and weight vary proportionally.