MadSci Network: Anatomy |

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Interesting question. I don't think that you can show that Arm length = Foot length or something like that. However, you may be able to do something similar. Let's say you have very tall persons and very short persons. We can probably say that the forearms of the tall people are longer than the forearms of the short people etc. We can probably say that the same thing holds for legs, fingers, etc. This longer-shorter thing leads to a "correlation coefficient" which means that there is a relationship, but not probably one of equality. That is sort of an advanced idea however. To look at your very specific question, I would take the kids in your class and measure them. Then you can try to look for relationships between them. I would do the boys and girls separately. To really understand this question, you probably need a little more math than you have. If you wish to pursue it, try to find information about "correlation coefficients" or "Pearson coefficients". Good luck!!

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