Science in action

In the interests of science, I measured all our head circumferences today, the results being as follows:

• Daniel - 57cm
• Libby - 56.5cm
• Joshua - 52.5cm
• Bethany - 49.5cm
• Caleb - 34.5cm

(feel free to rush out and buy tape measures to compare)

This being represented graphically on the axes Circumference/Age looks thus:



And if you were to represent said circumferences graphically, as a circle (because measuring the circumference of an oval is way too hard), the result is seen thusly: